Home / 259,439.13-389,126.50-69,914.32

Finding the Fourth Proportional to 259,439.13, 389,126.50 and 69,914.32

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Solution

The fourth proportional to 259,439.13, 389,126.50 and 69,914.32 is: 104,862.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,439.13 : 389,126.50 = 69,914.32 : x
  2. Step 2: Convert to fraction form
    259,439.13/389,126.50 = 69,914.32/x
  3. Step 3: Cross multiply
    259,439.13x = 389,126.50 × 69,914.32
  4. Step 4: Simplify right side
    259,439.13x = 27,205,513,493.88
  5. Step 5: Solve for x
    x = 27,205,513,493.88/259,439.13
  6. Step 6: Final answer
    x = 104,862.80

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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.