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Finding the Fourth Proportional to 245,632.78, 368,449.26 and 87,851.80

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Solution

The fourth proportional to 245,632.78, 368,449.26 and 87,851.80 is: 131,777.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,632.78 : 368,449.26 = 87,851.80 : x
  2. Step 2: Convert to fraction form
    245,632.78/368,449.26 = 87,851.80/x
  3. Step 3: Cross multiply
    245,632.78x = 368,449.26 × 87,851.80
  4. Step 4: Simplify right side
    245,632.78x = 32,368,930,699.67
  5. Step 5: Solve for x
    x = 32,368,930,699.67/245,632.78
  6. Step 6: Final answer
    x = 131,777.73

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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.