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Finding the Fourth Proportional to 229,221.70, 316,310.09 and 127,239.14

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Solution

The fourth proportional to 229,221.70, 316,310.09 and 127,239.14 is: 175,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,221.70 : 316,310.09 = 127,239.14 : x
  2. Step 2: Convert to fraction form
    229,221.70/316,310.09 = 127,239.14/x
  3. Step 3: Cross multiply
    229,221.70x = 316,310.09 × 127,239.14
  4. Step 4: Simplify right side
    229,221.70x = 40,247,023,824.92
  5. Step 5: Solve for x
    x = 40,247,023,824.92/229,221.70
  6. Step 6: Final answer
    x = 175,581.21

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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.