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Finding the Fourth Proportional to 490,239.96, 676,604.80 and 299,363.46

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Solution

The fourth proportional to 490,239.96, 676,604.80 and 299,363.46 is: 413,166.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,239.96 : 676,604.80 = 299,363.46 : x
  2. Step 2: Convert to fraction form
    490,239.96/676,604.80 = 299,363.46/x
  3. Step 3: Cross multiply
    490,239.96x = 676,604.80 × 299,363.46
  4. Step 4: Simplify right side
    490,239.96x = 202,550,753,980.61
  5. Step 5: Solve for x
    x = 202,550,753,980.61/490,239.96
  6. Step 6: Final answer
    x = 413,166.55

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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.