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Finding the Fourth Proportional to 229,408.72, 316,551.72 and 127,426.48

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Solution

The fourth proportional to 229,408.72, 316,551.72 and 127,426.48 is: 175,830.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,408.72 : 316,551.72 = 127,426.48 : x
  2. Step 2: Convert to fraction form
    229,408.72/316,551.72 = 127,426.48/x
  3. Step 3: Cross multiply
    229,408.72x = 316,551.72 × 127,426.48
  4. Step 4: Simplify right side
    229,408.72x = 40,337,071,417.55
  5. Step 5: Solve for x
    x = 40,337,071,417.55/229,408.72
  6. Step 6: Final answer
    x = 175,830.59

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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.