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Finding the Fourth Proportional to 438,952.20, 605,803.20 and 247,977.90

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Solution

The fourth proportional to 438,952.20, 605,803.20 and 247,977.90 is: 342,237.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,952.20 : 605,803.20 = 247,977.90 : x
  2. Step 2: Convert to fraction form
    438,952.20/605,803.20 = 247,977.90/x
  3. Step 3: Cross multiply
    438,952.20x = 605,803.20 × 247,977.90
  4. Step 4: Simplify right side
    438,952.20x = 150,225,805,349.28
  5. Step 5: Solve for x
    x = 150,225,805,349.28/438,952.20
  6. Step 6: Final answer
    x = 342,237.28

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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.