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Finding the Fourth Proportional to 539,061.40, 808,446.30 and 159,981.40

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Solution

The fourth proportional to 539,061.40, 808,446.30 and 159,981.40 is: 239,928.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,061.40 : 808,446.30 = 159,981.40 : x
  2. Step 2: Convert to fraction form
    539,061.40/808,446.30 = 159,981.40/x
  3. Step 3: Cross multiply
    539,061.40x = 808,446.30 × 159,981.40
  4. Step 4: Simplify right side
    539,061.40x = 129,336,370,898.82
  5. Step 5: Solve for x
    x = 129,336,370,898.82/539,061.40
  6. Step 6: Final answer
    x = 239,928.83

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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.