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Finding the Fourth Proportional to 245,659.70, 368,494.11 and 77,176.87

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Solution

The fourth proportional to 245,659.70, 368,494.11 and 77,176.87 is: 115,766.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,659.70 : 368,494.11 = 77,176.87 : x
  2. Step 2: Convert to fraction form
    245,659.70/368,494.11 = 77,176.87/x
  3. Step 3: Cross multiply
    245,659.70x = 368,494.11 × 77,176.87
  4. Step 4: Simplify right side
    245,659.70x = 28,439,221,102.00
  5. Step 5: Solve for x
    x = 28,439,221,102.00/245,659.70
  6. Step 6: Final answer
    x = 115,766.73

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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.