Home / 259,623.30-389,406.15-72,653.70

Finding the Fourth Proportional to 259,623.30, 389,406.15 and 72,653.70

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Solution

The fourth proportional to 259,623.30, 389,406.15 and 72,653.70 is: 108,972.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,623.30 : 389,406.15 = 72,653.70 : x
  2. Step 2: Convert to fraction form
    259,623.30/389,406.15 = 72,653.70/x
  3. Step 3: Cross multiply
    259,623.30x = 389,406.15 × 72,653.70
  4. Step 4: Simplify right side
    259,623.30x = 28,291,797,600.26
  5. Step 5: Solve for x
    x = 28,291,797,600.26/259,623.30
  6. Step 6: Final answer
    x = 108,972.49

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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.