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Finding the Fourth Proportional to 240,446.16, 331,819.19 and 138,489.93

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Solution

The fourth proportional to 240,446.16, 331,819.19 and 138,489.93 is: 191,118.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,446.16 : 331,819.19 = 138,489.93 : x
  2. Step 2: Convert to fraction form
    240,446.16/331,819.19 = 138,489.93/x
  3. Step 3: Cross multiply
    240,446.16x = 331,819.19 × 138,489.93
  4. Step 4: Simplify right side
    240,446.16x = 45,953,616,395.76
  5. Step 5: Solve for x
    x = 45,953,616,395.76/240,446.16
  6. Step 6: Final answer
    x = 191,118.11

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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.