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Finding the Fourth Proportional to 330,335.20, 495,502.80 and 328,366.90

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Solution

The fourth proportional to 330,335.20, 495,502.80 and 328,366.90 is: 492,550.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,335.20 : 495,502.80 = 328,366.90 : x
  2. Step 2: Convert to fraction form
    330,335.20/495,502.80 = 328,366.90/x
  3. Step 3: Cross multiply
    330,335.20x = 495,502.80 × 328,366.90
  4. Step 4: Simplify right side
    330,335.20x = 162,706,718,377.32
  5. Step 5: Solve for x
    x = 162,706,718,377.32/330,335.20
  6. Step 6: Final answer
    x = 492,550.35

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1.5x scale

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.