Home / 280,639.32-387,273.61-159,797.85

Finding the Fourth Proportional to 280,639.32, 387,273.61 and 159,797.85

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Solution

The fourth proportional to 280,639.32, 387,273.61 and 159,797.85 is: 220,516.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,639.32 : 387,273.61 = 159,797.85 : x
  2. Step 2: Convert to fraction form
    280,639.32/387,273.61 = 159,797.85/x
  3. Step 3: Cross multiply
    280,639.32x = 387,273.61 × 159,797.85
  4. Step 4: Simplify right side
    280,639.32x = 61,885,488,088.35
  5. Step 5: Solve for x
    x = 61,885,488,088.35/280,639.32
  6. Step 6: Final answer
    x = 220,516.10

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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.