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Finding the Fourth Proportional to 240,599.10, 332,109.76 and 138,665.28

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Solution

The fourth proportional to 240,599.10, 332,109.76 and 138,665.28 is: 191,405.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,599.10 : 332,109.76 = 138,665.28 : x
  2. Step 2: Convert to fraction form
    240,599.10/332,109.76 = 138,665.28/x
  3. Step 3: Cross multiply
    240,599.10x = 332,109.76 × 138,665.28
  4. Step 4: Simplify right side
    240,599.10x = 46,052,091,684.20
  5. Step 5: Solve for x
    x = 46,052,091,684.20/240,599.10
  6. Step 6: Final answer
    x = 191,405.92

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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.