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Finding the Fourth Proportional to 280,146.86, 386,620.94 and 159,299.39

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Solution

The fourth proportional to 280,146.86, 386,620.94 and 159,299.39 is: 219,843.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,146.86 : 386,620.94 = 159,299.39 : x
  2. Step 2: Convert to fraction form
    280,146.86/386,620.94 = 159,299.39/x
  3. Step 3: Cross multiply
    280,146.86x = 386,620.94 × 159,299.39
  4. Step 4: Simplify right side
    280,146.86x = 61,588,480,869.78
  5. Step 5: Solve for x
    x = 61,588,480,869.78/280,146.86
  6. Step 6: Final answer
    x = 219,843.55

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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.