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Finding the Fourth Proportional to 489,437, 734,067.70 and 129,610.12

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Solution

The fourth proportional to 489,437, 734,067.70 and 129,610.12 is: 194,391.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,437 : 734,067.70 = 129,610.12 : x
  2. Step 2: Convert to fraction form
    489,437/734,067.70 = 129,610.12/x
  3. Step 3: Cross multiply
    489,437x = 734,067.70 × 129,610.12
  4. Step 4: Simplify right side
    489,437x = 95,142,602,685.12
  5. Step 5: Solve for x
    x = 95,142,602,685.12/489,437
  6. Step 6: Final answer
    x = 194,391.93

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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.