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Finding the Fourth Proportional to 245,770.78, 368,656 and 140,515.92

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Solution

The fourth proportional to 245,770.78, 368,656 and 140,515.92 is: 210,773.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,770.78 : 368,656 = 140,515.92 : x
  2. Step 2: Convert to fraction form
    245,770.78/368,656 = 140,515.92/x
  3. Step 3: Cross multiply
    245,770.78x = 368,656 × 140,515.92
  4. Step 4: Simplify right side
    245,770.78x = 51,802,037,003.52
  5. Step 5: Solve for x
    x = 51,802,037,003.52/245,770.78
  6. Step 6: Final answer
    x = 210,773.78

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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.