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Finding the Fourth Proportional to 245,781.26, 368,671.90 and 140,526.42

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Solution

The fourth proportional to 245,781.26, 368,671.90 and 140,526.42 is: 210,789.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,781.26 : 368,671.90 = 140,526.42 : x
  2. Step 2: Convert to fraction form
    245,781.26/368,671.90 = 140,526.42/x
  3. Step 3: Cross multiply
    245,781.26x = 368,671.90 × 140,526.42
  4. Step 4: Simplify right side
    245,781.26x = 51,808,142,469.80
  5. Step 5: Solve for x
    x = 51,808,142,469.80/245,781.26
  6. Step 6: Final answer
    x = 210,789.63

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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.