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Finding the Fourth Proportional to 240,445.16, 331,817.81 and 138,488.93

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Solution

The fourth proportional to 240,445.16, 331,817.81 and 138,488.93 is: 191,116.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,445.16 : 331,817.81 = 138,488.93 : x
  2. Step 2: Convert to fraction form
    240,445.16/331,817.81 = 138,488.93/x
  3. Step 3: Cross multiply
    240,445.16x = 331,817.81 × 138,488.93
  4. Step 4: Simplify right side
    240,445.16x = 45,953,091,110.31
  5. Step 5: Solve for x
    x = 45,953,091,110.31/240,445.16
  6. Step 6: Final answer
    x = 191,116.73

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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.