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Finding the Fourth Proportional to 242,879.87, 364,330.74 and 74,387.92

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Solution

The fourth proportional to 242,879.87, 364,330.74 and 74,387.92 is: 111,585.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,879.87 : 364,330.74 = 74,387.92 : x
  2. Step 2: Convert to fraction form
    242,879.87/364,330.74 = 74,387.92/x
  3. Step 3: Cross multiply
    242,879.87x = 364,330.74 × 74,387.92
  4. Step 4: Simplify right side
    242,879.87x = 27,101,805,364.26
  5. Step 5: Solve for x
    x = 27,101,805,364.26/242,879.87
  6. Step 6: Final answer
    x = 111,585.23

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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.