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Finding the Fourth Proportional to 259,503.18, 389,209.87 and 117,315.39

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Solution

The fourth proportional to 259,503.18, 389,209.87 and 117,315.39 is: 175,952.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,503.18 : 389,209.87 = 117,315.39 : x
  2. Step 2: Convert to fraction form
    259,503.18/389,209.87 = 117,315.39/x
  3. Step 3: Cross multiply
    259,503.18x = 389,209.87 × 117,315.39
  4. Step 4: Simplify right side
    259,503.18x = 45,660,307,690.90
  5. Step 5: Solve for x
    x = 45,660,307,690.90/259,503.18
  6. Step 6: Final answer
    x = 175,952.79

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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.