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Finding the Fourth Proportional to 437,185.55, 655,801.75 and 137,689.47

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Solution

The fourth proportional to 437,185.55, 655,801.75 and 137,689.47 is: 206,541.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,185.55 : 655,801.75 = 137,689.47 : x
  2. Step 2: Convert to fraction form
    437,185.55/655,801.75 = 137,689.47/x
  3. Step 3: Cross multiply
    437,185.55x = 655,801.75 × 137,689.47
  4. Step 4: Simplify right side
    437,185.55x = 90,296,995,382.57
  5. Step 5: Solve for x
    x = 90,296,995,382.57/437,185.55
  6. Step 6: Final answer
    x = 206,541.58

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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.