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Finding the Fourth Proportional to 359,249.61, 495,753.09 and 198,111.45

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Solution

The fourth proportional to 359,249.61, 495,753.09 and 198,111.45 is: 273,387.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,249.61 : 495,753.09 = 198,111.45 : x
  2. Step 2: Convert to fraction form
    359,249.61/495,753.09 = 198,111.45/x
  3. Step 3: Cross multiply
    359,249.61x = 495,753.09 × 198,111.45
  4. Step 4: Simplify right side
    359,249.61x = 98,214,363,501.88
  5. Step 5: Solve for x
    x = 98,214,363,501.88/359,249.61
  6. Step 6: Final answer
    x = 273,387.53

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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.