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Finding the Fourth Proportional to 353,073.48, 487,264.05 and 198,039.33

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Solution

The fourth proportional to 353,073.48, 487,264.05 and 198,039.33 is: 273,306.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,073.48 : 487,264.05 = 198,039.33 : x
  2. Step 2: Convert to fraction form
    353,073.48/487,264.05 = 198,039.33/x
  3. Step 3: Cross multiply
    353,073.48x = 487,264.05 × 198,039.33
  4. Step 4: Simplify right side
    353,073.48x = 96,497,445,995.09
  5. Step 5: Solve for x
    x = 96,497,445,995.09/353,073.48
  6. Step 6: Final answer
    x = 273,306.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.