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Finding the Fourth Proportional to 259,911.59, 389,915.99 and 82,370.93

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Solution

The fourth proportional to 259,911.59, 389,915.99 and 82,370.93 is: 123,571.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,911.59 : 389,915.99 = 82,370.93 : x
  2. Step 2: Convert to fraction form
    259,911.59/389,915.99 = 82,370.93/x
  3. Step 3: Cross multiply
    259,911.59x = 389,915.99 × 82,370.93
  4. Step 4: Simplify right side
    259,911.59x = 32,117,740,356.74
  5. Step 5: Solve for x
    x = 32,117,740,356.74/259,911.59
  6. Step 6: Final answer
    x = 123,571.79

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1.5x scale

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.