Home / 280,733.22-387,434.88-159,912.36

Finding the Fourth Proportional to 280,733.22, 387,434.88 and 159,912.36

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Solution

The fourth proportional to 280,733.22, 387,434.88 and 159,912.36 is: 220,692.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,733.22 : 387,434.88 = 159,912.36 : x
  2. Step 2: Convert to fraction form
    280,733.22/387,434.88 = 159,912.36/x
  3. Step 3: Cross multiply
    280,733.22x = 387,434.88 × 159,912.36
  4. Step 4: Simplify right side
    280,733.22x = 61,955,626,007.12
  5. Step 5: Solve for x
    x = 61,955,626,007.12/280,733.22
  6. Step 6: Final answer
    x = 220,692.18

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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.