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Finding the Fourth Proportional to 279,531.60, 419,124.60 and 161,144.40

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Solution

The fourth proportional to 279,531.60, 419,124.60 and 161,144.40 is: 241,616.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,531.60 : 419,124.60 = 161,144.40 : x
  2. Step 2: Convert to fraction form
    279,531.60/419,124.60 = 161,144.40/x
  3. Step 3: Cross multiply
    279,531.60x = 419,124.60 × 161,144.40
  4. Step 4: Simplify right side
    279,531.60x = 67,539,582,192.24
  5. Step 5: Solve for x
    x = 67,539,582,192.24/279,531.60
  6. Step 6: Final answer
    x = 241,616.98

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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.