Home / 343,446.12-515,110.86-90,729.36

Finding the Fourth Proportional to 343,446.12, 515,110.86 and 90,729.36

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Solution

The fourth proportional to 343,446.12, 515,110.86 and 90,729.36 is: 136,078.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,446.12 : 515,110.86 = 90,729.36 : x
  2. Step 2: Convert to fraction form
    343,446.12/515,110.86 = 90,729.36/x
  3. Step 3: Cross multiply
    343,446.12x = 515,110.86 × 90,729.36
  4. Step 4: Simplify right side
    343,446.12x = 46,735,678,656.85
  5. Step 5: Solve for x
    x = 46,735,678,656.85/343,446.12
  6. Step 6: Final answer
    x = 136,078.63

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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.