Home / 479,857.02-720,228.38-243,365.78

Finding the Fourth Proportional to 479,857.02, 720,228.38 and 243,365.78

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Solution

The fourth proportional to 479,857.02, 720,228.38 and 243,365.78 is: 365,273.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,857.02 : 720,228.38 = 243,365.78 : x
  2. Step 2: Convert to fraction form
    479,857.02/720,228.38 = 243,365.78/x
  3. Step 3: Cross multiply
    479,857.02x = 720,228.38 × 243,365.78
  4. Step 4: Simplify right side
    479,857.02x = 175,278,936,658.87
  5. Step 5: Solve for x
    x = 175,278,936,658.87/479,857.02
  6. Step 6: Final answer
    x = 365,273.26

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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.