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Finding the Fourth Proportional to 540,918.80, 811,378.20 and 146,934.80

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Solution

The fourth proportional to 540,918.80, 811,378.20 and 146,934.80 is: 220,402.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,918.80 : 811,378.20 = 146,934.80 : x
  2. Step 2: Convert to fraction form
    540,918.80/811,378.20 = 146,934.80/x
  3. Step 3: Cross multiply
    540,918.80x = 811,378.20 × 146,934.80
  4. Step 4: Simplify right side
    540,918.80x = 119,219,693,541.36
  5. Step 5: Solve for x
    x = 119,219,693,541.36/540,918.80
  6. Step 6: Final answer
    x = 220,402.20

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.