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Finding the Fourth Proportional to 539,143.40, 808,576.65 and 159,974.45

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Solution

The fourth proportional to 539,143.40, 808,576.65 and 159,974.45 is: 239,920.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,143.40 : 808,576.65 = 159,974.45 : x
  2. Step 2: Convert to fraction form
    539,143.40/808,576.65 = 159,974.45/x
  3. Step 3: Cross multiply
    539,143.40x = 808,576.65 × 159,974.45
  4. Step 4: Simplify right side
    539,143.40x = 129,351,604,866.59
  5. Step 5: Solve for x
    x = 129,351,604,866.59/539,143.40
  6. Step 6: Final answer
    x = 239,920.59

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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.