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Finding the Fourth Proportional to 262,502.38, 393,740.70 and 72,961.48

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Solution

The fourth proportional to 262,502.38, 393,740.70 and 72,961.48 is: 109,438.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,502.38 : 393,740.70 = 72,961.48 : x
  2. Step 2: Convert to fraction form
    262,502.38/393,740.70 = 72,961.48/x
  3. Step 3: Cross multiply
    262,502.38x = 393,740.70 × 72,961.48
  4. Step 4: Simplify right side
    262,502.38x = 28,727,904,208.24
  5. Step 5: Solve for x
    x = 28,727,904,208.24/262,502.38
  6. Step 6: Final answer
    x = 109,438.64

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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.