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Finding the Fourth Proportional to 356,626.47, 534,934.31 and 86,757.15

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Solution

The fourth proportional to 356,626.47, 534,934.31 and 86,757.15 is: 130,134.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,626.47 : 534,934.31 = 86,757.15 : x
  2. Step 2: Convert to fraction form
    356,626.47/534,934.31 = 86,757.15/x
  3. Step 3: Cross multiply
    356,626.47x = 534,934.31 × 86,757.15
  4. Step 4: Simplify right side
    356,626.47x = 46,409,375,739.03
  5. Step 5: Solve for x
    x = 46,409,375,739.03/356,626.47
  6. Step 6: Final answer
    x = 130,134.41

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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.