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Finding the Fourth Proportional to 247,646.86, 371,523.64 and 76,865.02

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Solution

The fourth proportional to 247,646.86, 371,523.64 and 76,865.02 is: 115,314.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,646.86 : 371,523.64 = 76,865.02 : x
  2. Step 2: Convert to fraction form
    247,646.86/371,523.64 = 76,865.02/x
  3. Step 3: Cross multiply
    247,646.86x = 371,523.64 × 76,865.02
  4. Step 4: Simplify right side
    247,646.86x = 28,557,172,019.07
  5. Step 5: Solve for x
    x = 28,557,172,019.07/247,646.86
  6. Step 6: Final answer
    x = 115,314.09

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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.