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Finding the Fourth Proportional to 220,156.60, 330,234.90 and 172,917.40

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Solution

The fourth proportional to 220,156.60, 330,234.90 and 172,917.40 is: 259,376.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,156.60 : 330,234.90 = 172,917.40 : x
  2. Step 2: Convert to fraction form
    220,156.60/330,234.90 = 172,917.40/x
  3. Step 3: Cross multiply
    220,156.60x = 330,234.90 × 172,917.40
  4. Step 4: Simplify right side
    220,156.60x = 57,103,360,297.26
  5. Step 5: Solve for x
    x = 57,103,360,297.26/220,156.60
  6. Step 6: Final answer
    x = 259,376.10

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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.