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Finding the Fourth Proportional to 253,034.70, 379,556.10 and 66,046.20

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Solution

The fourth proportional to 253,034.70, 379,556.10 and 66,046.20 is: 99,070.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,034.70 : 379,556.10 = 66,046.20 : x
  2. Step 2: Convert to fraction form
    253,034.70/379,556.10 = 66,046.20/x
  3. Step 3: Cross multiply
    253,034.70x = 379,556.10 × 66,046.20
  4. Step 4: Simplify right side
    253,034.70x = 25,068,238,091.82
  5. Step 5: Solve for x
    x = 25,068,238,091.82/253,034.70
  6. Step 6: Final answer
    x = 99,070.36

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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.