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Finding the Fourth Proportional to 490,423.14, 676,781.73 and 272,630.34

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Solution

The fourth proportional to 490,423.14, 676,781.73 and 272,630.34 is: 376,228.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,423.14 : 676,781.73 = 272,630.34 : x
  2. Step 2: Convert to fraction form
    490,423.14/676,781.73 = 272,630.34/x
  3. Step 3: Cross multiply
    490,423.14x = 676,781.73 × 272,630.34
  4. Step 4: Simplify right side
    490,423.14x = 184,511,233,155.69
  5. Step 5: Solve for x
    x = 184,511,233,155.69/490,423.14
  6. Step 6: Final answer
    x = 376,228.64

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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.