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Finding the Fourth Proportional to 242,641.20, 363,961.80 and 124,543.20

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Solution

The fourth proportional to 242,641.20, 363,961.80 and 124,543.20 is: 186,814.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,641.20 : 363,961.80 = 124,543.20 : x
  2. Step 2: Convert to fraction form
    242,641.20/363,961.80 = 124,543.20/x
  3. Step 3: Cross multiply
    242,641.20x = 363,961.80 × 124,543.20
  4. Step 4: Simplify right side
    242,641.20x = 45,328,967,249.76
  5. Step 5: Solve for x
    x = 45,328,967,249.76/242,641.20
  6. Step 6: Final answer
    x = 186,814.80

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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.