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Finding the Fourth Proportional to 229,505.88, 316,711.80 and 127,528.70

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Solution

The fourth proportional to 229,505.88, 316,711.80 and 127,528.70 is: 175,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,505.88 : 316,711.80 = 127,528.70 : x
  2. Step 2: Convert to fraction form
    229,505.88/316,711.80 = 127,528.70/x
  3. Step 3: Cross multiply
    229,505.88x = 316,711.80 × 127,528.70
  4. Step 4: Simplify right side
    229,505.88x = 40,389,844,128.66
  5. Step 5: Solve for x
    x = 40,389,844,128.66/229,505.88
  6. Step 6: Final answer
    x = 175,986.10

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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.