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Finding the Fourth Proportional to 381,812.16, 526,870.05 and 220,677.65

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Solution

The fourth proportional to 381,812.16, 526,870.05 and 220,677.65 is: 304,517.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,812.16 : 526,870.05 = 220,677.65 : x
  2. Step 2: Convert to fraction form
    381,812.16/526,870.05 = 220,677.65/x
  3. Step 3: Cross multiply
    381,812.16x = 526,870.05 × 220,677.65
  4. Step 4: Simplify right side
    381,812.16x = 116,268,441,855.03
  5. Step 5: Solve for x
    x = 116,268,441,855.03/381,812.16
  6. Step 6: Final answer
    x = 304,517.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.