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Finding the Fourth Proportional to 425,990.64, 587,863.80 and 235,012.08

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Solution

The fourth proportional to 425,990.64, 587,863.80 and 235,012.08 is: 324,314.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,990.64 : 587,863.80 = 235,012.08 : x
  2. Step 2: Convert to fraction form
    425,990.64/587,863.80 = 235,012.08/x
  3. Step 3: Cross multiply
    425,990.64x = 587,863.80 × 235,012.08
  4. Step 4: Simplify right side
    425,990.64x = 138,155,094,394.70
  5. Step 5: Solve for x
    x = 138,155,094,394.70/425,990.64
  6. Step 6: Final answer
    x = 324,314.86

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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.