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Finding the Fourth Proportional to 229,312.62, 316,437.30 and 127,331.87

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Solution

The fourth proportional to 229,312.62, 316,437.30 and 127,331.87 is: 175,710.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,312.62 : 316,437.30 = 127,331.87 : x
  2. Step 2: Convert to fraction form
    229,312.62/316,437.30 = 127,331.87/x
  3. Step 3: Cross multiply
    229,312.62x = 316,437.30 × 127,331.87
  4. Step 4: Simplify right side
    229,312.62x = 40,292,551,564.56
  5. Step 5: Solve for x
    x = 40,292,551,564.56/229,312.62
  6. Step 6: Final answer
    x = 175,710.14

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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.