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Finding the Fourth Proportional to 143,652.51, 215,478.63 and 38,468.61

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Solution

The fourth proportional to 143,652.51, 215,478.63 and 38,468.61 is: 57,702.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,652.51 : 215,478.63 = 38,468.61 : x
  2. Step 2: Convert to fraction form
    143,652.51/215,478.63 = 38,468.61/x
  3. Step 3: Cross multiply
    143,652.51x = 215,478.63 × 38,468.61
  4. Step 4: Simplify right side
    143,652.51x = 8,289,163,380.80
  5. Step 5: Solve for x
    x = 8,289,163,380.80/143,652.51
  6. Step 6: Final answer
    x = 57,702.88

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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.