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Finding the Fourth Proportional to 242,587.29, 363,934.48 and 74,120.78

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Solution

The fourth proportional to 242,587.29, 363,934.48 and 74,120.78 is: 111,197.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,587.29 : 363,934.48 = 74,120.78 : x
  2. Step 2: Convert to fraction form
    242,587.29/363,934.48 = 74,120.78/x
  3. Step 3: Cross multiply
    242,587.29x = 363,934.48 × 74,120.78
  4. Step 4: Simplify right side
    242,587.29x = 26,975,106,342.87
  5. Step 5: Solve for x
    x = 26,975,106,342.87/242,587.29
  6. Step 6: Final answer
    x = 111,197.53

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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.