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Finding the Fourth Proportional to 245,712.72, 368,568.77 and 77,247.75

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Solution

The fourth proportional to 245,712.72, 368,568.77 and 77,247.75 is: 115,871.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,712.72 : 368,568.77 = 77,247.75 : x
  2. Step 2: Convert to fraction form
    245,712.72/368,568.77 = 77,247.75/x
  3. Step 3: Cross multiply
    245,712.72x = 368,568.77 × 77,247.75
  4. Step 4: Simplify right side
    245,712.72x = 28,471,108,202.77
  5. Step 5: Solve for x
    x = 28,471,108,202.77/245,712.72
  6. Step 6: Final answer
    x = 115,871.53

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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.