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Finding the Fourth Proportional to 490,680.08, 736,019.87 and 153,747.21

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Solution

The fourth proportional to 490,680.08, 736,019.87 and 153,747.21 is: 230,620.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,680.08 : 736,019.87 = 153,747.21 : x
  2. Step 2: Convert to fraction form
    490,680.08/736,019.87 = 153,747.21/x
  3. Step 3: Cross multiply
    490,680.08x = 736,019.87 × 153,747.21
  4. Step 4: Simplify right side
    490,680.08x = 113,161,003,508.40
  5. Step 5: Solve for x
    x = 113,161,003,508.40/490,680.08
  6. Step 6: Final answer
    x = 230,620.74

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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.