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Finding the Fourth Proportional to 603,937.20, 905,902.56 and 154,657.20

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Solution

The fourth proportional to 603,937.20, 905,902.56 and 154,657.20 is: 231,984.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,937.20 : 905,902.56 = 154,657.20 : x
  2. Step 2: Convert to fraction form
    603,937.20/905,902.56 = 154,657.20/x
  3. Step 3: Cross multiply
    603,937.20x = 905,902.56 × 154,657.20
  4. Step 4: Simplify right side
    603,937.20x = 140,104,353,402.43
  5. Step 5: Solve for x
    x = 140,104,353,402.43/603,937.20
  6. Step 6: Final answer
    x = 231,984.97

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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.