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Finding the Fourth Proportional to 240,445.65, 331,818.50 and 138,489.42

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Solution

The fourth proportional to 240,445.65, 331,818.50 and 138,489.42 is: 191,117.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,445.65 : 331,818.50 = 138,489.42 : x
  2. Step 2: Convert to fraction form
    240,445.65/331,818.50 = 138,489.42/x
  3. Step 3: Cross multiply
    240,445.65x = 331,818.50 × 138,489.42
  4. Step 4: Simplify right side
    240,445.65x = 45,953,351,610.27
  5. Step 5: Solve for x
    x = 45,953,351,610.27/240,445.65
  6. Step 6: Final answer
    x = 191,117.42

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1.5x scale

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.