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Finding the Fourth Proportional to 218,917.80, 328,121.55 and 100,601.10

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Solution

The fourth proportional to 218,917.80, 328,121.55 and 100,601.10 is: 150,784.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,917.80 : 328,121.55 = 100,601.10 : x
  2. Step 2: Convert to fraction form
    218,917.80/328,121.55 = 100,601.10/x
  3. Step 3: Cross multiply
    218,917.80x = 328,121.55 × 100,601.10
  4. Step 4: Simplify right side
    218,917.80x = 33,009,388,863.71
  5. Step 5: Solve for x
    x = 33,009,388,863.71/218,917.80
  6. Step 6: Final answer
    x = 150,784.40

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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.