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Finding the Fourth Proportional to 245,672.78, 368,321.90 and 77,095.88

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Solution

The fourth proportional to 245,672.78, 368,321.90 and 77,095.88 is: 115,585.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,672.78 : 368,321.90 = 77,095.88 : x
  2. Step 2: Convert to fraction form
    245,672.78/368,321.90 = 77,095.88/x
  3. Step 3: Cross multiply
    245,672.78x = 368,321.90 × 77,095.88
  4. Step 4: Simplify right side
    245,672.78x = 28,396,101,003.77
  5. Step 5: Solve for x
    x = 28,396,101,003.77/245,672.78
  6. Step 6: Final answer
    x = 115,585.05

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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.