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Finding the Fourth Proportional to 259,454.49, 389,149.48 and 69,929.67

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Solution

The fourth proportional to 259,454.49, 389,149.48 and 69,929.67 is: 104,885.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,454.49 : 389,149.48 = 69,929.67 : x
  2. Step 2: Convert to fraction form
    259,454.49/389,149.48 = 69,929.67/x
  3. Step 3: Cross multiply
    259,454.49x = 389,149.48 × 69,929.67
  4. Step 4: Simplify right side
    259,454.49x = 27,213,094,717.07
  5. Step 5: Solve for x
    x = 27,213,094,717.07/259,454.49
  6. Step 6: Final answer
    x = 104,885.81

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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.