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Finding the Fourth Proportional to 381,106.55, 571,659.86 and 100,626.23

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Solution

The fourth proportional to 381,106.55, 571,659.86 and 100,626.23 is: 150,939.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,106.55 : 571,659.86 = 100,626.23 : x
  2. Step 2: Convert to fraction form
    381,106.55/571,659.86 = 100,626.23/x
  3. Step 3: Cross multiply
    381,106.55x = 571,659.86 × 100,626.23
  4. Step 4: Simplify right side
    381,106.55x = 57,523,976,051.00
  5. Step 5: Solve for x
    x = 57,523,976,051.00/381,106.55
  6. Step 6: Final answer
    x = 150,939.35

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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.