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Finding the Fourth Proportional to 253,207.76, 379,389.89 and 178,170.23

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Solution

The fourth proportional to 253,207.76, 379,389.89 and 178,170.23 is: 266,958.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,207.76 : 379,389.89 = 178,170.23 : x
  2. Step 2: Convert to fraction form
    253,207.76/379,389.89 = 178,170.23/x
  3. Step 3: Cross multiply
    253,207.76x = 379,389.89 × 178,170.23
  4. Step 4: Simplify right side
    253,207.76x = 67,595,985,354.88
  5. Step 5: Solve for x
    x = 67,595,985,354.88/253,207.76
  6. Step 6: Final answer
    x = 266,958.59

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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.