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Finding the Fourth Proportional to 238,611.60, 357,895.80 and 80,845.20

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Solution

The fourth proportional to 238,611.60, 357,895.80 and 80,845.20 is: 121,260.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,611.60 : 357,895.80 = 80,845.20 : x
  2. Step 2: Convert to fraction form
    238,611.60/357,895.80 = 80,845.20/x
  3. Step 3: Cross multiply
    238,611.60x = 357,895.80 × 80,845.20
  4. Step 4: Simplify right side
    238,611.60x = 28,934,157,530.16
  5. Step 5: Solve for x
    x = 28,934,157,530.16/238,611.60
  6. Step 6: Final answer
    x = 121,260.48

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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.