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Finding the Fourth Proportional to 540,856.80, 811,285.20 and 225,208.80

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Solution

The fourth proportional to 540,856.80, 811,285.20 and 225,208.80 is: 337,813.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,856.80 : 811,285.20 = 225,208.80 : x
  2. Step 2: Convert to fraction form
    540,856.80/811,285.20 = 225,208.80/x
  3. Step 3: Cross multiply
    540,856.80x = 811,285.20 × 225,208.80
  4. Step 4: Simplify right side
    540,856.80x = 182,708,566,349.76
  5. Step 5: Solve for x
    x = 182,708,566,349.76/540,856.80
  6. Step 6: Final answer
    x = 337,813.20

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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.