Home / 426,827.46-640,310.68-199,350.56

Finding the Fourth Proportional to 426,827.46, 640,310.68 and 199,350.56

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Solution

The fourth proportional to 426,827.46, 640,310.68 and 199,350.56 is: 299,058.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,827.46 : 640,310.68 = 199,350.56 : x
  2. Step 2: Convert to fraction form
    426,827.46/640,310.68 = 199,350.56/x
  3. Step 3: Cross multiply
    426,827.46x = 640,310.68 × 199,350.56
  4. Step 4: Simplify right side
    426,827.46x = 127,646,290,880.20
  5. Step 5: Solve for x
    x = 127,646,290,880.20/426,827.46
  6. Step 6: Final answer
    x = 299,058.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.