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Finding the Fourth Proportional to 245,642.03, 368,463.22 and 68,149.20

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Solution

The fourth proportional to 245,642.03, 368,463.22 and 68,149.20 is: 102,223.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,642.03 : 368,463.22 = 68,149.20 : x
  2. Step 2: Convert to fraction form
    245,642.03/368,463.22 = 68,149.20/x
  3. Step 3: Cross multiply
    245,642.03x = 368,463.22 × 68,149.20
  4. Step 4: Simplify right side
    245,642.03x = 25,110,474,883.79
  5. Step 5: Solve for x
    x = 25,110,474,883.79/245,642.03
  6. Step 6: Final answer
    x = 102,223.85

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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.