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Finding the Fourth Proportional to 280,174.50, 386,651.60 and 159,326.68

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Solution

The fourth proportional to 280,174.50, 386,651.60 and 159,326.68 is: 219,876.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,174.50 : 386,651.60 = 159,326.68 : x
  2. Step 2: Convert to fraction form
    280,174.50/386,651.60 = 159,326.68/x
  3. Step 3: Cross multiply
    280,174.50x = 386,651.60 × 159,326.68
  4. Step 4: Simplify right side
    280,174.50x = 61,603,915,744.69
  5. Step 5: Solve for x
    x = 61,603,915,744.69/280,174.50
  6. Step 6: Final answer
    x = 219,876.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.