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Finding the Fourth Proportional to 330,375.12, 455,915.16 and 179,473.20

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Solution

The fourth proportional to 330,375.12, 455,915.16 and 179,473.20 is: 247,671.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,375.12 : 455,915.16 = 179,473.20 : x
  2. Step 2: Convert to fraction form
    330,375.12/455,915.16 = 179,473.20/x
  3. Step 3: Cross multiply
    330,375.12x = 455,915.16 × 179,473.20
  4. Step 4: Simplify right side
    330,375.12x = 81,824,552,693.71
  5. Step 5: Solve for x
    x = 81,824,552,693.71/330,375.12
  6. Step 6: Final answer
    x = 247,671.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.