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Finding the Fourth Proportional to 253,279.20, 379,611.60 and 112,888.80

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Solution

The fourth proportional to 253,279.20, 379,611.60 and 112,888.80 is: 169,196.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,279.20 : 379,611.60 = 112,888.80 : x
  2. Step 2: Convert to fraction form
    253,279.20/379,611.60 = 112,888.80/x
  3. Step 3: Cross multiply
    253,279.20x = 379,611.60 × 112,888.80
  4. Step 4: Simplify right side
    253,279.20x = 42,853,897,990.08
  5. Step 5: Solve for x
    x = 42,853,897,990.08/253,279.20
  6. Step 6: Final answer
    x = 169,196.28

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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.