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Finding the Fourth Proportional to 229,410.30, 316,636.80 and 127,470.78

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Solution

The fourth proportional to 229,410.30, 316,636.80 and 127,470.78 is: 175,937.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,410.30 : 316,636.80 = 127,470.78 : x
  2. Step 2: Convert to fraction form
    229,410.30/316,636.80 = 127,470.78/x
  3. Step 3: Cross multiply
    229,410.30x = 316,636.80 × 127,470.78
  4. Step 4: Simplify right side
    229,410.30x = 40,361,939,872.70
  5. Step 5: Solve for x
    x = 40,361,939,872.70/229,410.30
  6. Step 6: Final answer
    x = 175,937.78

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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.