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Finding the Fourth Proportional to 381,206.25, 571,809.38 and 131,888.25

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Solution

The fourth proportional to 381,206.25, 571,809.38 and 131,888.25 is: 197,832.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,206.25 : 571,809.38 = 131,888.25 : x
  2. Step 2: Convert to fraction form
    381,206.25/571,809.38 = 131,888.25/x
  3. Step 3: Cross multiply
    381,206.25x = 571,809.38 × 131,888.25
  4. Step 4: Simplify right side
    381,206.25x = 75,414,937,802.34
  5. Step 5: Solve for x
    x = 75,414,937,802.34/381,206.25
  6. Step 6: Final answer
    x = 197,832.38

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Similar ratio
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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.