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Finding the Fourth Proportional to 320,606.38, 442,613.38 and 240,004.90

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Solution

The fourth proportional to 320,606.38, 442,613.38 and 240,004.90 is: 331,338.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,606.38 : 442,613.38 = 240,004.90 : x
  2. Step 2: Convert to fraction form
    320,606.38/442,613.38 = 240,004.90/x
  3. Step 3: Cross multiply
    320,606.38x = 442,613.38 × 240,004.90
  4. Step 4: Simplify right side
    320,606.38x = 106,229,377,792.50
  5. Step 5: Solve for x
    x = 106,229,377,792.50/320,606.38
  6. Step 6: Final answer
    x = 331,338.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.