Home / 259,301.25-389,017.49-72,312.75

Finding the Fourth Proportional to 259,301.25, 389,017.49 and 72,312.75

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Solution

The fourth proportional to 259,301.25, 389,017.49 and 72,312.75 is: 108,487.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,301.25 : 389,017.49 = 72,312.75 : x
  2. Step 2: Convert to fraction form
    259,301.25/389,017.49 = 72,312.75/x
  3. Step 3: Cross multiply
    259,301.25x = 389,017.49 × 72,312.75
  4. Step 4: Simplify right side
    259,301.25x = 28,130,924,138.43
  5. Step 5: Solve for x
    x = 28,130,924,138.43/259,301.25
  6. Step 6: Final answer
    x = 108,487.42

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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.