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Finding the Fourth Proportional to 399,842.37, 599,868.71 and 143,700.82

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Solution

The fourth proportional to 399,842.37, 599,868.71 and 143,700.82 is: 215,589.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,842.37 : 599,868.71 = 143,700.82 : x
  2. Step 2: Convert to fraction form
    399,842.37/599,868.71 = 143,700.82/x
  3. Step 3: Cross multiply
    399,842.37x = 599,868.71 × 143,700.82
  4. Step 4: Simplify right side
    399,842.37x = 86,201,625,519.34
  5. Step 5: Solve for x
    x = 86,201,625,519.34/399,842.37
  6. Step 6: Final answer
    x = 215,589.02

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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.