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Finding the Fourth Proportional to 543,432.30, 815,148.45 and 277,711.80

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Solution

The fourth proportional to 543,432.30, 815,148.45 and 277,711.80 is: 416,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,432.30 : 815,148.45 = 277,711.80 : x
  2. Step 2: Convert to fraction form
    543,432.30/815,148.45 = 277,711.80/x
  3. Step 3: Cross multiply
    543,432.30x = 815,148.45 × 277,711.80
  4. Step 4: Simplify right side
    543,432.30x = 226,376,343,316.71
  5. Step 5: Solve for x
    x = 226,376,343,316.71/543,432.30
  6. Step 6: Final answer
    x = 416,567.70

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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.