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Finding the Fourth Proportional to 229,670.30, 316,928.55 and 126,311.78

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Solution

The fourth proportional to 229,670.30, 316,928.55 and 126,311.78 is: 174,301.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,670.30 : 316,928.55 = 126,311.78 : x
  2. Step 2: Convert to fraction form
    229,670.30/316,928.55 = 126,311.78/x
  3. Step 3: Cross multiply
    229,670.30x = 316,928.55 × 126,311.78
  4. Step 4: Simplify right side
    229,670.30x = 40,031,807,698.68
  5. Step 5: Solve for x
    x = 40,031,807,698.68/229,670.30
  6. Step 6: Final answer
    x = 174,301.19

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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.