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Finding the Fourth Proportional to 324,385.52, 485,900.20 and 260,862.70

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Solution

The fourth proportional to 324,385.52, 485,900.20 and 260,862.70 is: 390,748.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,385.52 : 485,900.20 = 260,862.70 : x
  2. Step 2: Convert to fraction form
    324,385.52/485,900.20 = 260,862.70/x
  3. Step 3: Cross multiply
    324,385.52x = 485,900.20 × 260,862.70
  4. Step 4: Simplify right side
    324,385.52x = 126,753,238,102.54
  5. Step 5: Solve for x
    x = 126,753,238,102.54/324,385.52
  6. Step 6: Final answer
    x = 390,748.76

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1.5x scale

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.