Home / 445,255.10-668,320.05-220,868.90

Finding the Fourth Proportional to 445,255.10, 668,320.05 and 220,868.90

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Solution

The fourth proportional to 445,255.10, 668,320.05 and 220,868.90 is: 331,520.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,255.10 : 668,320.05 = 220,868.90 : x
  2. Step 2: Convert to fraction form
    445,255.10/668,320.05 = 220,868.90/x
  3. Step 3: Cross multiply
    445,255.10x = 668,320.05 × 220,868.90
  4. Step 4: Simplify right side
    445,255.10x = 147,611,114,291.45
  5. Step 5: Solve for x
    x = 147,611,114,291.45/445,255.10
  6. Step 6: Final answer
    x = 331,520.32

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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.