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Finding the Fourth Proportional to 539,534.60, 808,329.90 and 258,432.20

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Solution

The fourth proportional to 539,534.60, 808,329.90 and 258,432.20 is: 387,182.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,534.60 : 808,329.90 = 258,432.20 : x
  2. Step 2: Convert to fraction form
    539,534.60/808,329.90 = 258,432.20/x
  3. Step 3: Cross multiply
    539,534.60x = 808,329.90 × 258,432.20
  4. Step 4: Simplify right side
    539,534.60x = 208,898,474,382.78
  5. Step 5: Solve for x
    x = 208,898,474,382.78/539,534.60
  6. Step 6: Final answer
    x = 387,182.72

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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.