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Finding the Fourth Proportional to 171,072.80, 256,609.20 and 164,074.40

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Solution

The fourth proportional to 171,072.80, 256,609.20 and 164,074.40 is: 246,111.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,072.80 : 256,609.20 = 164,074.40 : x
  2. Step 2: Convert to fraction form
    171,072.80/256,609.20 = 164,074.40/x
  3. Step 3: Cross multiply
    171,072.80x = 256,609.20 × 164,074.40
  4. Step 4: Simplify right side
    171,072.80x = 42,103,000,524.48
  5. Step 5: Solve for x
    x = 42,103,000,524.48/171,072.80
  6. Step 6: Final answer
    x = 246,111.60

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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.