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Finding the Fourth Proportional to 357,131.66, 535,691.60 and 143,894.37

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Solution

The fourth proportional to 357,131.66, 535,691.60 and 143,894.37 is: 215,839.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,131.66 : 535,691.60 = 143,894.37 : x
  2. Step 2: Convert to fraction form
    357,131.66/535,691.60 = 143,894.37/x
  3. Step 3: Cross multiply
    357,131.66x = 535,691.60 × 143,894.37
  4. Step 4: Simplify right side
    357,131.66x = 77,083,007,529.97
  5. Step 5: Solve for x
    x = 77,083,007,529.97/357,131.66
  6. Step 6: Final answer
    x = 215,839.19

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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.