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Finding the Fourth Proportional to 490,281.78, 676,588.92 and 272,490.42

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Solution

The fourth proportional to 490,281.78, 676,588.92 and 272,490.42 is: 376,036.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,281.78 : 676,588.92 = 272,490.42 : x
  2. Step 2: Convert to fraction form
    490,281.78/676,588.92 = 272,490.42/x
  3. Step 3: Cross multiply
    490,281.78x = 676,588.92 × 272,490.42
  4. Step 4: Simplify right side
    490,281.78x = 184,363,998,978.15
  5. Step 5: Solve for x
    x = 184,363,998,978.15/490,281.78
  6. Step 6: Final answer
    x = 376,036.81

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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.