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Finding the Fourth Proportional to 484,670.98, 726,950.85 and 129,712.69

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Solution

The fourth proportional to 484,670.98, 726,950.85 and 129,712.69 is: 194,554.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,670.98 : 726,950.85 = 129,712.69 : x
  2. Step 2: Convert to fraction form
    484,670.98/726,950.85 = 129,712.69/x
  3. Step 3: Cross multiply
    484,670.98x = 726,950.85 × 129,712.69
  4. Step 4: Simplify right side
    484,670.98x = 94,294,750,251.29
  5. Step 5: Solve for x
    x = 94,294,750,251.29/484,670.98
  6. Step 6: Final answer
    x = 194,554.15

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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.