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Finding the Fourth Proportional to 325,425.60, 487,380.24 and 316,456.47

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Solution

The fourth proportional to 325,425.60, 487,380.24 and 316,456.47 is: 473,947.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,425.60 : 487,380.24 = 316,456.47 : x
  2. Step 2: Convert to fraction form
    325,425.60/487,380.24 = 316,456.47/x
  3. Step 3: Cross multiply
    325,425.60x = 487,380.24 × 316,456.47
  4. Step 4: Simplify right side
    325,425.60x = 154,234,630,298.15
  5. Step 5: Solve for x
    x = 154,234,630,298.15/325,425.60
  6. Step 6: Final answer
    x = 473,947.44

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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.