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Finding the Fourth Proportional to 490,889.29, 736,247.53 and 131,064.61

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Solution

The fourth proportional to 490,889.29, 736,247.53 and 131,064.61 is: 196,573.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,889.29 : 736,247.53 = 131,064.61 : x
  2. Step 2: Convert to fraction form
    490,889.29/736,247.53 = 131,064.61/x
  3. Step 3: Cross multiply
    490,889.29x = 736,247.53 × 131,064.61
  4. Step 4: Simplify right side
    490,889.29x = 96,495,995,382.91
  5. Step 5: Solve for x
    x = 96,495,995,382.91/490,889.29
  6. Step 6: Final answer
    x = 196,573.85

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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.