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Finding the Fourth Proportional to 220,115.20, 330,075.60 and 86,951.20

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Solution

The fourth proportional to 220,115.20, 330,075.60 and 86,951.20 is: 130,388.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,115.20 : 330,075.60 = 86,951.20 : x
  2. Step 2: Convert to fraction form
    220,115.20/330,075.60 = 86,951.20/x
  3. Step 3: Cross multiply
    220,115.20x = 330,075.60 × 86,951.20
  4. Step 4: Simplify right side
    220,115.20x = 28,700,469,510.72
  5. Step 5: Solve for x
    x = 28,700,469,510.72/220,115.20
  6. Step 6: Final answer
    x = 130,388.40

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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.