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Finding the Fourth Proportional to 478,797.65, 660,745.25 and 263,945.40

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Solution

The fourth proportional to 478,797.65, 660,745.25 and 263,945.40 is: 364,247.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,797.65 : 660,745.25 = 263,945.40 : x
  2. Step 2: Convert to fraction form
    478,797.65/660,745.25 = 263,945.40/x
  3. Step 3: Cross multiply
    478,797.65x = 660,745.25 × 263,945.40
  4. Step 4: Simplify right side
    478,797.65x = 174,400,667,989.62
  5. Step 5: Solve for x
    x = 174,400,667,989.62/478,797.65
  6. Step 6: Final answer
    x = 364,247.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.