Home / 220,311.36-330,280.20-87,285.60

Finding the Fourth Proportional to 220,311.36, 330,280.20 and 87,285.60

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Solution

The fourth proportional to 220,311.36, 330,280.20 and 87,285.60 is: 130,854.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,311.36 : 330,280.20 = 87,285.60 : x
  2. Step 2: Convert to fraction form
    220,311.36/330,280.20 = 87,285.60/x
  3. Step 3: Cross multiply
    220,311.36x = 330,280.20 × 87,285.60
  4. Step 4: Simplify right side
    220,311.36x = 28,828,705,425.12
  5. Step 5: Solve for x
    x = 28,828,705,425.12/220,311.36
  6. Step 6: Final answer
    x = 130,854.38

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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.