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Finding the Fourth Proportional to 356,505.25, 534,752.80 and 86,635.37

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Solution

The fourth proportional to 356,505.25, 534,752.80 and 86,635.37 is: 129,951.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,505.25 : 534,752.80 = 86,635.37 : x
  2. Step 2: Convert to fraction form
    356,505.25/534,752.80 = 86,635.37/x
  3. Step 3: Cross multiply
    356,505.25x = 534,752.80 × 86,635.37
  4. Step 4: Simplify right side
    356,505.25x = 46,328,506,686.54
  5. Step 5: Solve for x
    x = 46,328,506,686.54/356,505.25
  6. Step 6: Final answer
    x = 129,951.82

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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.