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Finding the Fourth Proportional to 348,061.20, 521,962.20 and 137,655.60

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Solution

The fourth proportional to 348,061.20, 521,962.20 and 137,655.60 is: 206,432.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,061.20 : 521,962.20 = 137,655.60 : x
  2. Step 2: Convert to fraction form
    348,061.20/521,962.20 = 137,655.60/x
  3. Step 3: Cross multiply
    348,061.20x = 521,962.20 × 137,655.60
  4. Step 4: Simplify right side
    348,061.20x = 71,851,019,818.32
  5. Step 5: Solve for x
    x = 71,851,019,818.32/348,061.20
  6. Step 6: Final answer
    x = 206,432.14

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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.