Home / 220,279.21-330,528.58-87,255.34

Finding the Fourth Proportional to 220,279.21, 330,528.58 and 87,255.34

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Solution

The fourth proportional to 220,279.21, 330,528.58 and 87,255.34 is: 130,926.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,279.21 : 330,528.58 = 87,255.34 : x
  2. Step 2: Convert to fraction form
    220,279.21/330,528.58 = 87,255.34/x
  3. Step 3: Cross multiply
    220,279.21x = 330,528.58 × 87,255.34
  4. Step 4: Simplify right side
    220,279.21x = 28,840,382,583.16
  5. Step 5: Solve for x
    x = 28,840,382,583.16/220,279.21
  6. Step 6: Final answer
    x = 130,926.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.