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Finding the Fourth Proportional to 354,179.52, 531,348.12 and 129,534.93

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Solution

The fourth proportional to 354,179.52, 531,348.12 and 129,534.93 is: 194,331.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,179.52 : 531,348.12 = 129,534.93 : x
  2. Step 2: Convert to fraction form
    354,179.52/531,348.12 = 129,534.93/x
  3. Step 3: Cross multiply
    354,179.52x = 531,348.12 × 129,534.93
  4. Step 4: Simplify right side
    354,179.52x = 68,828,141,529.83
  5. Step 5: Solve for x
    x = 68,828,141,529.83/354,179.52
  6. Step 6: Final answer
    x = 194,331.23

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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.