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Finding the Fourth Proportional to 438,909.32, 605,744.16 and 247,935.02

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Solution

The fourth proportional to 438,909.32, 605,744.16 and 247,935.02 is: 342,178.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,909.32 : 605,744.16 = 247,935.02 : x
  2. Step 2: Convert to fraction form
    438,909.32/605,744.16 = 247,935.02/x
  3. Step 3: Cross multiply
    438,909.32x = 605,744.16 × 247,935.02
  4. Step 4: Simplify right side
    438,909.32x = 150,185,190,424.48
  5. Step 5: Solve for x
    x = 150,185,190,424.48/438,909.32
  6. Step 6: Final answer
    x = 342,178.18

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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.