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Finding the Fourth Proportional to 250,668.24, 345,904.20 and 137,472.72

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Solution

The fourth proportional to 250,668.24, 345,904.20 and 137,472.72 is: 189,702.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,668.24 : 345,904.20 = 137,472.72 : x
  2. Step 2: Convert to fraction form
    250,668.24/345,904.20 = 137,472.72/x
  3. Step 3: Cross multiply
    250,668.24x = 345,904.20 × 137,472.72
  4. Step 4: Simplify right side
    250,668.24x = 47,552,391,233.42
  5. Step 5: Solve for x
    x = 47,552,391,233.42/250,668.24
  6. Step 6: Final answer
    x = 189,702.50

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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.