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Finding the Fourth Proportional to 545,884.80, 818,827.20 and 280,164.30

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Solution

The fourth proportional to 545,884.80, 818,827.20 and 280,164.30 is: 420,246.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,884.80 : 818,827.20 = 280,164.30 : x
  2. Step 2: Convert to fraction form
    545,884.80/818,827.20 = 280,164.30/x
  3. Step 3: Cross multiply
    545,884.80x = 818,827.20 × 280,164.30
  4. Step 4: Simplify right side
    545,884.80x = 229,406,149,308.96
  5. Step 5: Solve for x
    x = 229,406,149,308.96/545,884.80
  6. Step 6: Final answer
    x = 420,246.45

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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.