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Finding the Fourth Proportional to 356,626.72, 534,934.68 and 86,757.40

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Solution

The fourth proportional to 356,626.72, 534,934.68 and 86,757.40 is: 130,134.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,626.72 : 534,934.68 = 86,757.40 : x
  2. Step 2: Convert to fraction form
    356,626.72/534,934.68 = 86,757.40/x
  3. Step 3: Cross multiply
    356,626.72x = 534,934.68 × 86,757.40
  4. Step 4: Simplify right side
    356,626.72x = 46,409,542,006.63
  5. Step 5: Solve for x
    x = 46,409,542,006.63/356,626.72
  6. Step 6: Final answer
    x = 130,134.79

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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.