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Finding the Fourth Proportional to 407,439.60, 611,620.20 and 241,321.20

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Solution

The fourth proportional to 407,439.60, 611,620.20 and 241,321.20 is: 362,254.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,439.60 : 611,620.20 = 241,321.20 : x
  2. Step 2: Convert to fraction form
    407,439.60/611,620.20 = 241,321.20/x
  3. Step 3: Cross multiply
    407,439.60x = 611,620.20 × 241,321.20
  4. Step 4: Simplify right side
    407,439.60x = 147,596,920,608.24
  5. Step 5: Solve for x
    x = 147,596,920,608.24/407,439.60
  6. Step 6: Final answer
    x = 362,254.73

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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.