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Finding the Fourth Proportional to 431,070.72, 646,606.08 and 131,552.84

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Solution

The fourth proportional to 431,070.72, 646,606.08 and 131,552.84 is: 197,329.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,070.72 : 646,606.08 = 131,552.84 : x
  2. Step 2: Convert to fraction form
    431,070.72/646,606.08 = 131,552.84/x
  3. Step 3: Cross multiply
    431,070.72x = 646,606.08 × 131,552.84
  4. Step 4: Simplify right side
    431,070.72x = 85,062,866,185.27
  5. Step 5: Solve for x
    x = 85,062,866,185.27/431,070.72
  6. Step 6: Final answer
    x = 197,329.26

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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.