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Finding the Fourth Proportional to 330,087.42, 495,157.59 and 105,479.55

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Solution

The fourth proportional to 330,087.42, 495,157.59 and 105,479.55 is: 158,227.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,087.42 : 495,157.59 = 105,479.55 : x
  2. Step 2: Convert to fraction form
    330,087.42/495,157.59 = 105,479.55/x
  3. Step 3: Cross multiply
    330,087.42x = 495,157.59 × 105,479.55
  4. Step 4: Simplify right side
    330,087.42x = 52,228,999,772.28
  5. Step 5: Solve for x
    x = 52,228,999,772.28/330,087.42
  6. Step 6: Final answer
    x = 158,227.78

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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.