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Finding the Fourth Proportional to 253,242.32, 379,723.24 and 103,587.70

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Solution

The fourth proportional to 253,242.32, 379,723.24 and 103,587.70 is: 155,324.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,242.32 : 379,723.24 = 103,587.70 : x
  2. Step 2: Convert to fraction form
    253,242.32/379,723.24 = 103,587.70/x
  3. Step 3: Cross multiply
    253,242.32x = 379,723.24 × 103,587.70
  4. Step 4: Simplify right side
    253,242.32x = 39,334,655,859.87
  5. Step 5: Solve for x
    x = 39,334,655,859.87/253,242.32
  6. Step 6: Final answer
    x = 155,324.18

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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.