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Finding the Fourth Proportional to 245,631.78, 368,447.76 and 87,850.80

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Solution

The fourth proportional to 245,631.78, 368,447.76 and 87,850.80 is: 131,776.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,631.78 : 368,447.76 = 87,850.80 : x
  2. Step 2: Convert to fraction form
    245,631.78/368,447.76 = 87,850.80/x
  3. Step 3: Cross multiply
    245,631.78x = 368,447.76 × 87,850.80
  4. Step 4: Simplify right side
    245,631.78x = 32,368,430,474.21
  5. Step 5: Solve for x
    x = 32,368,430,474.21/245,631.78
  6. Step 6: Final answer
    x = 131,776.23

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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.