Home / 218,976.60-328,551.30-85,834.20

Finding the Fourth Proportional to 218,976.60, 328,551.30 and 85,834.20

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Solution

The fourth proportional to 218,976.60, 328,551.30 and 85,834.20 is: 128,785.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,976.60 : 328,551.30 = 85,834.20 : x
  2. Step 2: Convert to fraction form
    218,976.60/328,551.30 = 85,834.20/x
  3. Step 3: Cross multiply
    218,976.60x = 328,551.30 × 85,834.20
  4. Step 4: Simplify right side
    218,976.60x = 28,200,937,994.46
  5. Step 5: Solve for x
    x = 28,200,937,994.46/218,976.60
  6. Step 6: Final answer
    x = 128,785.17

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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.