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Finding the Fourth Proportional to 253,266.40, 379,899.60 and 148,031.20

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Solution

The fourth proportional to 253,266.40, 379,899.60 and 148,031.20 is: 222,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,266.40 : 379,899.60 = 148,031.20 : x
  2. Step 2: Convert to fraction form
    253,266.40/379,899.60 = 148,031.20/x
  3. Step 3: Cross multiply
    253,266.40x = 379,899.60 × 148,031.20
  4. Step 4: Simplify right side
    253,266.40x = 56,236,993,667.52
  5. Step 5: Solve for x
    x = 56,236,993,667.52/253,266.40
  6. Step 6: Final answer
    x = 222,046.80

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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.