Home / 415,078.20-622,617.30-205,126.20

Finding the Fourth Proportional to 415,078.20, 622,617.30 and 205,126.20

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Solution

The fourth proportional to 415,078.20, 622,617.30 and 205,126.20 is: 307,689.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,078.20 : 622,617.30 = 205,126.20 : x
  2. Step 2: Convert to fraction form
    415,078.20/622,617.30 = 205,126.20/x
  3. Step 3: Cross multiply
    415,078.20x = 622,617.30 × 205,126.20
  4. Step 4: Simplify right side
    415,078.20x = 127,715,120,803.26
  5. Step 5: Solve for x
    x = 127,715,120,803.26/415,078.20
  6. Step 6: Final answer
    x = 307,689.30

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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.