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Finding the Fourth Proportional to 381,392.77, 571,867.62 and 144,606.28

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Solution

The fourth proportional to 381,392.77, 571,867.62 and 144,606.28 is: 216,825.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,392.77 : 571,867.62 = 144,606.28 : x
  2. Step 2: Convert to fraction form
    381,392.77/571,867.62 = 144,606.28/x
  3. Step 3: Cross multiply
    381,392.77x = 571,867.62 × 144,606.28
  4. Step 4: Simplify right side
    381,392.77x = 82,695,649,180.65
  5. Step 5: Solve for x
    x = 82,695,649,180.65/381,392.77
  6. Step 6: Final answer
    x = 216,825.42

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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.