Home / 278,511.09-384,286.17-163,747.86

Finding the Fourth Proportional to 278,511.09, 384,286.17 and 163,747.86

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Solution

The fourth proportional to 278,511.09, 384,286.17 and 163,747.86 is: 225,937.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,511.09 : 384,286.17 = 163,747.86 : x
  2. Step 2: Convert to fraction form
    278,511.09/384,286.17 = 163,747.86/x
  3. Step 3: Cross multiply
    278,511.09x = 384,286.17 × 163,747.86
  4. Step 4: Simplify right side
    278,511.09x = 62,926,037,965.10
  5. Step 5: Solve for x
    x = 62,926,037,965.10/278,511.09
  6. Step 6: Final answer
    x = 225,937.28

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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.