Home / 280,710.36-387,449.87-159,923.43

Finding the Fourth Proportional to 280,710.36, 387,449.87 and 159,923.43

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Solution

The fourth proportional to 280,710.36, 387,449.87 and 159,923.43 is: 220,733.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,710.36 : 387,449.87 = 159,923.43 : x
  2. Step 2: Convert to fraction form
    280,710.36/387,449.87 = 159,923.43/x
  3. Step 3: Cross multiply
    280,710.36x = 387,449.87 × 159,923.43
  4. Step 4: Simplify right side
    280,710.36x = 61,962,311,363.84
  5. Step 5: Solve for x
    x = 61,962,311,363.84/280,710.36
  6. Step 6: Final answer
    x = 220,733.97

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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.