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Finding the Fourth Proportional to 490,198.77, 676,459.55 and 272,406.71

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Solution

The fourth proportional to 490,198.77, 676,459.55 and 272,406.71 is: 375,913.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,198.77 : 676,459.55 = 272,406.71 : x
  2. Step 2: Convert to fraction form
    490,198.77/676,459.55 = 272,406.71/x
  3. Step 3: Cross multiply
    490,198.77x = 676,459.55 × 272,406.71
  4. Step 4: Simplify right side
    490,198.77x = 184,272,122,835.75
  5. Step 5: Solve for x
    x = 184,272,122,835.75/490,198.77
  6. Step 6: Final answer
    x = 375,913.07

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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.