Home / 438,041.43-657,143.19-138,597.39

Finding the Fourth Proportional to 438,041.43, 657,143.19 and 138,597.39

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Solution

The fourth proportional to 438,041.43, 657,143.19 and 138,597.39 is: 207,921.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,041.43 : 657,143.19 = 138,597.39 : x
  2. Step 2: Convert to fraction form
    438,041.43/657,143.19 = 138,597.39/x
  3. Step 3: Cross multiply
    438,041.43x = 657,143.19 × 138,597.39
  4. Step 4: Simplify right side
    438,041.43x = 91,078,330,990.27
  5. Step 5: Solve for x
    x = 91,078,330,990.27/438,041.43
  6. Step 6: Final answer
    x = 207,921.73

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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.