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Finding the Fourth Proportional to 229,689.55, 316,972.47 and 127,724.32

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Solution

The fourth proportional to 229,689.55, 316,972.47 and 127,724.32 is: 176,260.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,689.55 : 316,972.47 = 127,724.32 : x
  2. Step 2: Convert to fraction form
    229,689.55/316,972.47 = 127,724.32/x
  3. Step 3: Cross multiply
    229,689.55x = 316,972.47 × 127,724.32
  4. Step 4: Simplify right side
    229,689.55x = 40,485,093,189.47
  5. Step 5: Solve for x
    x = 40,485,093,189.47/229,689.55
  6. Step 6: Final answer
    x = 176,260.06

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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.