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Finding the Fourth Proportional to 372,002.60, 558,222.60 and 135,369.20

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Solution

The fourth proportional to 372,002.60, 558,222.60 and 135,369.20 is: 203,133.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,002.60 : 558,222.60 = 135,369.20 : x
  2. Step 2: Convert to fraction form
    372,002.60/558,222.60 = 135,369.20/x
  3. Step 3: Cross multiply
    372,002.60x = 558,222.60 × 135,369.20
  4. Step 4: Simplify right side
    372,002.60x = 75,566,146,783.92
  5. Step 5: Solve for x
    x = 75,566,146,783.92/372,002.60
  6. Step 6: Final answer
    x = 203,133.38

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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.