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Finding the Fourth Proportional to 330,312.12, 455,828.22 and 179,410.20

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Solution

The fourth proportional to 330,312.12, 455,828.22 and 179,410.20 is: 247,584.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,312.12 : 455,828.22 = 179,410.20 : x
  2. Step 2: Convert to fraction form
    330,312.12/455,828.22 = 179,410.20/x
  3. Step 3: Cross multiply
    330,312.12x = 455,828.22 × 179,410.20
  4. Step 4: Simplify right side
    330,312.12x = 81,780,232,115.84
  5. Step 5: Solve for x
    x = 81,780,232,115.84/330,312.12
  6. Step 6: Final answer
    x = 247,584.72

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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.