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Finding the Fourth Proportional to 485,963.67, 728,896.29 and 131,013.57

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Solution

The fourth proportional to 485,963.67, 728,896.29 and 131,013.57 is: 196,507.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,963.67 : 728,896.29 = 131,013.57 : x
  2. Step 2: Convert to fraction form
    485,963.67/728,896.29 = 131,013.57/x
  3. Step 3: Cross multiply
    485,963.67x = 728,896.29 × 131,013.57
  4. Step 4: Simplify right side
    485,963.67x = 95,495,303,254.67
  5. Step 5: Solve for x
    x = 95,495,303,254.67/485,963.67
  6. Step 6: Final answer
    x = 196,507.08

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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.