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Finding the Fourth Proportional to 330,458.82, 495,714.49 and 140,920.80

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Solution

The fourth proportional to 330,458.82, 495,714.49 and 140,920.80 is: 211,392.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,458.82 : 495,714.49 = 140,920.80 : x
  2. Step 2: Convert to fraction form
    330,458.82/495,714.49 = 140,920.80/x
  3. Step 3: Cross multiply
    330,458.82x = 495,714.49 × 140,920.80
  4. Step 4: Simplify right side
    330,458.82x = 69,856,482,502.39
  5. Step 5: Solve for x
    x = 69,856,482,502.39/330,458.82
  6. Step 6: Final answer
    x = 211,392.40

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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.