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Finding the Fourth Proportional to 425,423, 587,081.22 and 231,830.30

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Solution

The fourth proportional to 425,423, 587,081.22 and 231,830.30 is: 319,924.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,423 : 587,081.22 = 231,830.30 : x
  2. Step 2: Convert to fraction form
    425,423/587,081.22 = 231,830.30/x
  3. Step 3: Cross multiply
    425,423x = 587,081.22 × 231,830.30
  4. Step 4: Simplify right side
    425,423x = 136,103,215,356.97
  5. Step 5: Solve for x
    x = 136,103,215,356.97/425,423
  6. Step 6: Final answer
    x = 319,924.44

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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.