Home / 259,932.30-389,898.45-72,943.80

Finding the Fourth Proportional to 259,932.30, 389,898.45 and 72,943.80

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Solution

The fourth proportional to 259,932.30, 389,898.45 and 72,943.80 is: 109,415.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,932.30 : 389,898.45 = 72,943.80 : x
  2. Step 2: Convert to fraction form
    259,932.30/389,898.45 = 72,943.80/x
  3. Step 3: Cross multiply
    259,932.30x = 389,898.45 × 72,943.80
  4. Step 4: Simplify right side
    259,932.30x = 28,440,674,557.11
  5. Step 5: Solve for x
    x = 28,440,674,557.11/259,932.30
  6. Step 6: Final answer
    x = 109,415.70

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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.