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Finding the Fourth Proportional to 250,716.91, 375,721.80 and 138,447.67

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Solution

The fourth proportional to 250,716.91, 375,721.80 and 138,447.67 is: 207,476.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,716.91 : 375,721.80 = 138,447.67 : x
  2. Step 2: Convert to fraction form
    250,716.91/375,721.80 = 138,447.67/x
  3. Step 3: Cross multiply
    250,716.91x = 375,721.80 × 138,447.67
  4. Step 4: Simplify right side
    250,716.91x = 52,017,807,778.21
  5. Step 5: Solve for x
    x = 52,017,807,778.21/250,716.91
  6. Step 6: Final answer
    x = 207,476.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.