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Finding the Fourth Proportional to 381,008.90, 571,544.52 and 191,371.76

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Solution

The fourth proportional to 381,008.90, 571,544.52 and 191,371.76 is: 287,073.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,008.90 : 571,544.52 = 191,371.76 : x
  2. Step 2: Convert to fraction form
    381,008.90/571,544.52 = 191,371.76/x
  3. Step 3: Cross multiply
    381,008.90x = 571,544.52 × 191,371.76
  4. Step 4: Simplify right side
    381,008.90x = 109,377,480,710.76
  5. Step 5: Solve for x
    x = 109,377,480,710.76/381,008.90
  6. Step 6: Final answer
    x = 287,073.30

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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.