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Finding the Fourth Proportional to 229,369.95, 316,515.87 and 127,387.31

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Solution

The fourth proportional to 229,369.95, 316,515.87 and 127,387.31 is: 175,786.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,369.95 : 316,515.87 = 127,387.31 : x
  2. Step 2: Convert to fraction form
    229,369.95/316,515.87 = 127,387.31/x
  3. Step 3: Cross multiply
    229,369.95x = 316,515.87 × 127,387.31
  4. Step 4: Simplify right side
    229,369.95x = 40,320,103,669.03
  5. Step 5: Solve for x
    x = 40,320,103,669.03/229,369.95
  6. Step 6: Final answer
    x = 175,786.34

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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.