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Finding the Fourth Proportional to 245,719.80, 368,591.85 and 127,621.80

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Solution

The fourth proportional to 245,719.80, 368,591.85 and 127,621.80 is: 191,439.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,719.80 : 368,591.85 = 127,621.80 : x
  2. Step 2: Convert to fraction form
    245,719.80/368,591.85 = 127,621.80/x
  3. Step 3: Cross multiply
    245,719.80x = 368,591.85 × 127,621.80
  4. Step 4: Simplify right side
    245,719.80x = 47,040,355,362.33
  5. Step 5: Solve for x
    x = 47,040,355,362.33/245,719.80
  6. Step 6: Final answer
    x = 191,439.01

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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.