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Finding the Fourth Proportional to 245,378.88, 368,068.42 and 76,912.34

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Solution

The fourth proportional to 245,378.88, 368,068.42 and 76,912.34 is: 115,368.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,378.88 : 368,068.42 = 76,912.34 : x
  2. Step 2: Convert to fraction form
    245,378.88/368,068.42 = 76,912.34/x
  3. Step 3: Cross multiply
    245,378.88x = 368,068.42 × 76,912.34
  4. Step 4: Simplify right side
    245,378.88x = 28,309,003,462.30
  5. Step 5: Solve for x
    x = 28,309,003,462.30/245,378.88
  6. Step 6: Final answer
    x = 115,368.54

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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.