Home / 343,489.12-515,235.04-143,669.36

Finding the Fourth Proportional to 343,489.12, 515,235.04 and 143,669.36

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Solution

The fourth proportional to 343,489.12, 515,235.04 and 143,669.36 is: 215,504.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,489.12 : 515,235.04 = 143,669.36 : x
  2. Step 2: Convert to fraction form
    343,489.12/515,235.04 = 143,669.36/x
  3. Step 3: Cross multiply
    343,489.12x = 515,235.04 × 143,669.36
  4. Step 4: Simplify right side
    343,489.12x = 74,023,488,446.37
  5. Step 5: Solve for x
    x = 74,023,488,446.37/343,489.12
  6. Step 6: Final answer
    x = 215,504.61

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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.