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Finding the Fourth Proportional to 490,242.77, 676,608.68 and 299,366.27

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Solution

The fourth proportional to 490,242.77, 676,608.68 and 299,366.27 is: 413,170.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,242.77 : 676,608.68 = 299,366.27 : x
  2. Step 2: Convert to fraction form
    490,242.77/676,608.68 = 299,366.27/x
  3. Step 3: Cross multiply
    490,242.77x = 676,608.68 × 299,366.27
  4. Step 4: Simplify right side
    490,242.77x = 202,553,816,975.91
  5. Step 5: Solve for x
    x = 202,553,816,975.91/490,242.77
  6. Step 6: Final answer
    x = 413,170.43

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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.