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Finding the Fourth Proportional to 356,520.92, 534,776.16 and 86,651.06

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Solution

The fourth proportional to 356,520.92, 534,776.16 and 86,651.06 is: 129,975.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,520.92 : 534,776.16 = 86,651.06 : x
  2. Step 2: Convert to fraction form
    356,520.92/534,776.16 = 86,651.06/x
  3. Step 3: Cross multiply
    356,520.92x = 534,776.16 × 86,651.06
  4. Step 4: Simplify right side
    356,520.92x = 46,338,921,126.73
  5. Step 5: Solve for x
    x = 46,338,921,126.73/356,520.92
  6. Step 6: Final answer
    x = 129,975.32

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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.