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Finding the Fourth Proportional to 229,658.56, 316,943.20 and 127,684.88

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Solution

The fourth proportional to 229,658.56, 316,943.20 and 127,684.88 is: 176,213.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,658.56 : 316,943.20 = 127,684.88 : x
  2. Step 2: Convert to fraction form
    229,658.56/316,943.20 = 127,684.88/x
  3. Step 3: Cross multiply
    229,658.56x = 316,943.20 × 127,684.88
  4. Step 4: Simplify right side
    229,658.56x = 40,468,854,458.82
  5. Step 5: Solve for x
    x = 40,468,854,458.82/229,658.56
  6. Step 6: Final answer
    x = 176,213.13

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1.5x scale

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.