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Finding the Fourth Proportional to 381,769.70, 526,888.65 and 220,626.06

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Solution

The fourth proportional to 381,769.70, 526,888.65 and 220,626.06 is: 304,490.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,769.70 : 526,888.65 = 220,626.06 : x
  2. Step 2: Convert to fraction form
    381,769.70/526,888.65 = 220,626.06/x
  3. Step 3: Cross multiply
    381,769.70x = 526,888.65 × 220,626.06
  4. Step 4: Simplify right side
    381,769.70x = 116,245,366,908.22
  5. Step 5: Solve for x
    x = 116,245,366,908.22/381,769.70
  6. Step 6: Final answer
    x = 304,490.82

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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.