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Finding the Fourth Proportional to 490,199.71, 676,460.86 and 272,407.65

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Solution

The fourth proportional to 490,199.71, 676,460.86 and 272,407.65 is: 375,914.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,199.71 : 676,460.86 = 272,407.65 : x
  2. Step 2: Convert to fraction form
    490,199.71/676,460.86 = 272,407.65/x
  3. Step 3: Cross multiply
    490,199.71x = 676,460.86 × 272,407.65
  4. Step 4: Simplify right side
    490,199.71x = 184,273,112,508.56
  5. Step 5: Solve for x
    x = 184,273,112,508.56/490,199.71
  6. Step 6: Final answer
    x = 375,914.37

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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.