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Finding the Fourth Proportional to 381,650.77, 575,219.42 and 328,978.50

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Solution

The fourth proportional to 381,650.77, 575,219.42 and 328,978.50 is: 495,832.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,650.77 : 575,219.42 = 328,978.50 : x
  2. Step 2: Convert to fraction form
    381,650.77/575,219.42 = 328,978.50/x
  3. Step 3: Cross multiply
    381,650.77x = 575,219.42 × 328,978.50
  4. Step 4: Simplify right side
    381,650.77x = 189,234,821,962.47
  5. Step 5: Solve for x
    x = 189,234,821,962.47/381,650.77
  6. Step 6: Final answer
    x = 495,832.41

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.