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Finding the Fourth Proportional to 539,143.90, 808,577.40 and 159,974.95

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Solution

The fourth proportional to 539,143.90, 808,577.40 and 159,974.95 is: 239,921.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,143.90 : 808,577.40 = 159,974.95 : x
  2. Step 2: Convert to fraction form
    539,143.90/808,577.40 = 159,974.95/x
  3. Step 3: Cross multiply
    539,143.90x = 808,577.40 × 159,974.95
  4. Step 4: Simplify right side
    539,143.90x = 129,352,129,136.13
  5. Step 5: Solve for x
    x = 129,352,129,136.13/539,143.90
  6. Step 6: Final answer
    x = 239,921.34

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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.