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Finding the Fourth Proportional to 253,655.76, 349,248.29 and 215,335.88

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Solution

The fourth proportional to 253,655.76, 349,248.29 and 215,335.88 is: 296,487.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,655.76 : 349,248.29 = 215,335.88 : x
  2. Step 2: Convert to fraction form
    253,655.76/349,248.29 = 215,335.88/x
  3. Step 3: Cross multiply
    253,655.76x = 349,248.29 × 215,335.88
  4. Step 4: Simplify right side
    253,655.76x = 75,205,685,042.72
  5. Step 5: Solve for x
    x = 75,205,685,042.72/253,655.76
  6. Step 6: Final answer
    x = 296,487.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.