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Finding the Fourth Proportional to 372,405.70, 558,608.55 and 239,436.10

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Solution

The fourth proportional to 372,405.70, 558,608.55 and 239,436.10 is: 359,154.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,405.70 : 558,608.55 = 239,436.10 : x
  2. Step 2: Convert to fraction form
    372,405.70/558,608.55 = 239,436.10/x
  3. Step 3: Cross multiply
    372,405.70x = 558,608.55 × 239,436.10
  4. Step 4: Simplify right side
    372,405.70x = 133,751,052,638.66
  5. Step 5: Solve for x
    x = 133,751,052,638.66/372,405.70
  6. Step 6: Final answer
    x = 359,154.15

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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.