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Finding the Fourth Proportional to 403,750.15, 605,718.92 and 137,512.97

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Solution

The fourth proportional to 403,750.15, 605,718.92 and 137,512.97 is: 206,301.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,750.15 : 605,718.92 = 137,512.97 : x
  2. Step 2: Convert to fraction form
    403,750.15/605,718.92 = 137,512.97/x
  3. Step 3: Cross multiply
    403,750.15x = 605,718.92 × 137,512.97
  4. Step 4: Simplify right side
    403,750.15x = 83,294,207,674.39
  5. Step 5: Solve for x
    x = 83,294,207,674.39/403,750.15
  6. Step 6: Final answer
    x = 206,301.37

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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.