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Finding the Fourth Proportional to 403,512.51, 605,042.78 and 187,139.24

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Solution

The fourth proportional to 403,512.51, 605,042.78 and 187,139.24 is: 280,604.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,512.51 : 605,042.78 = 187,139.24 : x
  2. Step 2: Convert to fraction form
    403,512.51/605,042.78 = 187,139.24/x
  3. Step 3: Cross multiply
    403,512.51x = 605,042.78 × 187,139.24
  4. Step 4: Simplify right side
    403,512.51x = 113,227,242,055.78
  5. Step 5: Solve for x
    x = 113,227,242,055.78/403,512.51
  6. Step 6: Final answer
    x = 280,604.04

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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.