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Finding the Fourth Proportional to 438,915.94, 605,753.30 and 247,941.64

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Solution

The fourth proportional to 438,915.94, 605,753.30 and 247,941.64 is: 342,187.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,915.94 : 605,753.30 = 247,941.64 : x
  2. Step 2: Convert to fraction form
    438,915.94/605,753.30 = 247,941.64/x
  3. Step 3: Cross multiply
    438,915.94x = 605,753.30 × 247,941.64
  4. Step 4: Simplify right side
    438,915.94x = 150,191,466,637.41
  5. Step 5: Solve for x
    x = 150,191,466,637.41/438,915.94
  6. Step 6: Final answer
    x = 342,187.31

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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.