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Finding the Fourth Proportional to 490,724.87, 736,122.31 and 130,893.71

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Solution

The fourth proportional to 490,724.87, 736,122.31 and 130,893.71 is: 196,349.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,724.87 : 736,122.31 = 130,893.71 : x
  2. Step 2: Convert to fraction form
    490,724.87/736,122.31 = 130,893.71/x
  3. Step 3: Cross multiply
    490,724.87x = 736,122.31 × 130,893.71
  4. Step 4: Simplify right side
    490,724.87x = 96,353,781,682.74
  5. Step 5: Solve for x
    x = 96,353,781,682.74/490,724.87
  6. Step 6: Final answer
    x = 196,349.90

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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.