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Finding the Fourth Proportional to 425,580.72, 587,294.17 and 231,990.58

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Solution

The fourth proportional to 425,580.72, 587,294.17 and 231,990.58 is: 320,143.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,580.72 : 587,294.17 = 231,990.58 : x
  2. Step 2: Convert to fraction form
    425,580.72/587,294.17 = 231,990.58/x
  3. Step 3: Cross multiply
    425,580.72x = 587,294.17 × 231,990.58
  4. Step 4: Simplify right side
    425,580.72x = 136,246,715,128.92
  5. Step 5: Solve for x
    x = 136,246,715,128.92/425,580.72
  6. Step 6: Final answer
    x = 320,143.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.