Home / 490,131.28-676,357.14-275,280.40

Finding the Fourth Proportional to 490,131.28, 676,357.14 and 275,280.40

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Solution

The fourth proportional to 490,131.28, 676,357.14 and 275,280.40 is: 379,873.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,131.28 : 676,357.14 = 275,280.40 : x
  2. Step 2: Convert to fraction form
    490,131.28/676,357.14 = 275,280.40/x
  3. Step 3: Cross multiply
    490,131.28x = 676,357.14 × 275,280.40
  4. Step 4: Simplify right side
    490,131.28x = 186,187,864,042.06
  5. Step 5: Solve for x
    x = 186,187,864,042.06/490,131.28
  6. Step 6: Final answer
    x = 379,873.46

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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.