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Finding the Fourth Proportional to 490,908.60, 736,217.10 and 191,216.70

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Solution

The fourth proportional to 490,908.60, 736,217.10 and 191,216.70 is: 286,768.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,908.60 : 736,217.10 = 191,216.70 : x
  2. Step 2: Convert to fraction form
    490,908.60/736,217.10 = 191,216.70/x
  3. Step 3: Cross multiply
    490,908.60x = 736,217.10 × 191,216.70
  4. Step 4: Simplify right side
    490,908.60x = 140,777,004,345.57
  5. Step 5: Solve for x
    x = 140,777,004,345.57/490,908.60
  6. Step 6: Final answer
    x = 286,768.26

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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.