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Finding the Fourth Proportional to 280,013.16, 386,409.84 and 159,167.64

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Solution

The fourth proportional to 280,013.16, 386,409.84 and 159,167.64 is: 219,646.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,013.16 : 386,409.84 = 159,167.64 : x
  2. Step 2: Convert to fraction form
    280,013.16/386,409.84 = 159,167.64/x
  3. Step 3: Cross multiply
    280,013.16x = 386,409.84 × 159,167.64
  4. Step 4: Simplify right side
    280,013.16x = 61,503,942,305.58
  5. Step 5: Solve for x
    x = 61,503,942,305.58/280,013.16
  6. Step 6: Final answer
    x = 219,646.61

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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.