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Finding the Fourth Proportional to 539,115.20, 808,672.80 and 371,153.60

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Solution

The fourth proportional to 539,115.20, 808,672.80 and 371,153.60 is: 556,730.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,115.20 : 808,672.80 = 371,153.60 : x
  2. Step 2: Convert to fraction form
    539,115.20/808,672.80 = 371,153.60/x
  3. Step 3: Cross multiply
    539,115.20x = 808,672.80 × 371,153.60
  4. Step 4: Simplify right side
    539,115.20x = 300,141,820,942.08
  5. Step 5: Solve for x
    x = 300,141,820,942.08/539,115.20
  6. Step 6: Final answer
    x = 556,730.40

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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.