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Finding the Fourth Proportional to 372,419.16, 558,289.86 and 135,707.88

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Solution

The fourth proportional to 372,419.16, 558,289.86 and 135,707.88 is: 203,438.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,419.16 : 558,289.86 = 135,707.88 : x
  2. Step 2: Convert to fraction form
    372,419.16/558,289.86 = 135,707.88/x
  3. Step 3: Cross multiply
    372,419.16x = 558,289.86 × 135,707.88
  4. Step 4: Simplify right side
    372,419.16x = 75,764,333,326.10
  5. Step 5: Solve for x
    x = 75,764,333,326.10/372,419.16
  6. Step 6: Final answer
    x = 203,438.33

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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.