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Finding the Fourth Proportional to 229,320.62, 316,448.34 and 127,339.88

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Solution

The fourth proportional to 229,320.62, 316,448.34 and 127,339.88 is: 175,721.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,320.62 : 316,448.34 = 127,339.88 : x
  2. Step 2: Convert to fraction form
    229,320.62/316,448.34 = 127,339.88/x
  3. Step 3: Cross multiply
    229,320.62x = 316,448.34 × 127,339.88
  4. Step 4: Simplify right side
    229,320.62x = 40,296,493,641.80
  5. Step 5: Solve for x
    x = 40,296,493,641.80/229,320.62
  6. Step 6: Final answer
    x = 175,721.20

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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.