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Finding the Fourth Proportional to 242,879.53, 364,343.61 and 74,397.91

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Solution

The fourth proportional to 242,879.53, 364,343.61 and 74,397.91 is: 111,604.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,879.53 : 364,343.61 = 74,397.91 : x
  2. Step 2: Convert to fraction form
    242,879.53/364,343.61 = 74,397.91/x
  3. Step 3: Cross multiply
    242,879.53x = 364,343.61 × 74,397.91
  4. Step 4: Simplify right side
    242,879.53x = 27,106,403,105.86
  5. Step 5: Solve for x
    x = 27,106,403,105.86/242,879.53
  6. Step 6: Final answer
    x = 111,604.31

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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.