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Finding the Fourth Proportional to 539,065.80, 809,254.80 and 272,689.20

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Solution

The fourth proportional to 539,065.80, 809,254.80 and 272,689.20 is: 409,365.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,065.80 : 809,254.80 = 272,689.20 : x
  2. Step 2: Convert to fraction form
    539,065.80/809,254.80 = 272,689.20/x
  3. Step 3: Cross multiply
    539,065.80x = 809,254.80 × 272,689.20
  4. Step 4: Simplify right side
    539,065.80x = 220,675,044,008.16
  5. Step 5: Solve for x
    x = 220,675,044,008.16/539,065.80
  6. Step 6: Final answer
    x = 409,365.69

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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.