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Finding the Fourth Proportional to 570,144.48, 855,186.24 and 215,135.52

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Solution

The fourth proportional to 570,144.48, 855,186.24 and 215,135.52 is: 322,691.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,144.48 : 855,186.24 = 215,135.52 : x
  2. Step 2: Convert to fraction form
    570,144.48/855,186.24 = 215,135.52/x
  3. Step 3: Cross multiply
    570,144.48x = 855,186.24 × 215,135.52
  4. Step 4: Simplify right side
    570,144.48x = 183,980,936,439.25
  5. Step 5: Solve for x
    x = 183,980,936,439.25/570,144.48
  6. Step 6: Final answer
    x = 322,691.78

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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.