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Finding the Fourth Proportional to 245,351.50, 368,026.78 and 76,884.74

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Solution

The fourth proportional to 245,351.50, 368,026.78 and 76,884.74 is: 115,326.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,351.50 : 368,026.78 = 76,884.74 : x
  2. Step 2: Convert to fraction form
    245,351.50/368,026.78 = 76,884.74/x
  3. Step 3: Cross multiply
    245,351.50x = 368,026.78 × 76,884.74
  4. Step 4: Simplify right side
    245,351.50x = 28,295,643,293.34
  5. Step 5: Solve for x
    x = 28,295,643,293.34/245,351.50
  6. Step 6: Final answer
    x = 115,326.96

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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.