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Finding the Fourth Proportional to 439,170.32, 605,663.88 and 342,398

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Solution

The fourth proportional to 439,170.32, 605,663.88 and 342,398 is: 472,204.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,170.32 : 605,663.88 = 342,398 : x
  2. Step 2: Convert to fraction form
    439,170.32/605,663.88 = 342,398/x
  3. Step 3: Cross multiply
    439,170.32x = 605,663.88 × 342,398
  4. Step 4: Simplify right side
    439,170.32x = 207,378,101,184.24
  5. Step 5: Solve for x
    x = 207,378,101,184.24/439,170.32
  6. Step 6: Final answer
    x = 472,204.27

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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.