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Finding the Fourth Proportional to 381,630.12, 575,188.28 and 328,957.82

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Solution

The fourth proportional to 381,630.12, 575,188.28 and 328,957.82 is: 495,801.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,630.12 : 575,188.28 = 328,957.82 : x
  2. Step 2: Convert to fraction form
    381,630.12/575,188.28 = 328,957.82/x
  3. Step 3: Cross multiply
    381,630.12x = 575,188.28 × 328,957.82
  4. Step 4: Simplify right side
    381,630.12x = 189,212,686,633.99
  5. Step 5: Solve for x
    x = 189,212,686,633.99/381,630.12
  6. Step 6: Final answer
    x = 495,801.24

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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.