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Finding the Fourth Proportional to 229,658.15, 316,936.36 and 127,712.53

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Solution

The fourth proportional to 229,658.15, 316,936.36 and 127,712.53 is: 176,247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,658.15 : 316,936.36 = 127,712.53 : x
  2. Step 2: Convert to fraction form
    229,658.15/316,936.36 = 127,712.53/x
  3. Step 3: Cross multiply
    229,658.15x = 316,936.36 × 127,712.53
  4. Step 4: Simplify right side
    229,658.15x = 40,476,744,940.40
  5. Step 5: Solve for x
    x = 40,476,744,940.40/229,658.15
  6. Step 6: Final answer
    x = 176,247.80

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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.