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Finding the Fourth Proportional to 431,960.15, 648,064.60 and 132,484.66

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Solution

The fourth proportional to 431,960.15, 648,064.60 and 132,484.66 is: 198,765.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,960.15 : 648,064.60 = 132,484.66 : x
  2. Step 2: Convert to fraction form
    431,960.15/648,064.60 = 132,484.66/x
  3. Step 3: Cross multiply
    431,960.15x = 648,064.60 × 132,484.66
  4. Step 4: Simplify right side
    431,960.15x = 85,858,616,237.66
  5. Step 5: Solve for x
    x = 85,858,616,237.66/431,960.15
  6. Step 6: Final answer
    x = 198,765.13

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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.