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Finding the Fourth Proportional to 381,649.02, 575,216.78 and 328,976.75

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Solution

The fourth proportional to 381,649.02, 575,216.78 and 328,976.75 is: 495,829.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,649.02 : 575,216.78 = 328,976.75 : x
  2. Step 2: Convert to fraction form
    381,649.02/575,216.78 = 328,976.75/x
  3. Step 3: Cross multiply
    381,649.02x = 575,216.78 × 328,976.75
  4. Step 4: Simplify right side
    381,649.02x = 189,232,944,776.22
  5. Step 5: Solve for x
    x = 189,232,944,776.22/381,649.02
  6. Step 6: Final answer
    x = 495,829.77

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1.5x scale

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.