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Finding the Fourth Proportional to 245,442.56, 368,168.39 and 76,959.11

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Solution

The fourth proportional to 245,442.56, 368,168.39 and 76,959.11 is: 115,440.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,442.56 : 368,168.39 = 76,959.11 : x
  2. Step 2: Convert to fraction form
    245,442.56/368,168.39 = 76,959.11/x
  3. Step 3: Cross multiply
    245,442.56x = 368,168.39 × 76,959.11
  4. Step 4: Simplify right side
    245,442.56x = 28,333,912,448.76
  5. Step 5: Solve for x
    x = 28,333,912,448.76/245,442.56
  6. Step 6: Final answer
    x = 115,440.10

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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.