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Finding the Fourth Proportional to 539,070.40, 807,925.20 and 272,904.40

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Solution

The fourth proportional to 539,070.40, 807,925.20 and 272,904.40 is: 409,012.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,070.40 : 807,925.20 = 272,904.40 : x
  2. Step 2: Convert to fraction form
    539,070.40/807,925.20 = 272,904.40/x
  3. Step 3: Cross multiply
    539,070.40x = 807,925.20 × 272,904.40
  4. Step 4: Simplify right side
    539,070.40x = 220,486,341,950.88
  5. Step 5: Solve for x
    x = 220,486,341,950.88/539,070.40
  6. Step 6: Final answer
    x = 409,012.15

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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.