Home / 259,920.28-389,894.19-72,946.36

Finding the Fourth Proportional to 259,920.28, 389,894.19 and 72,946.36

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Solution

The fourth proportional to 259,920.28, 389,894.19 and 72,946.36 is: 109,423.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,920.28 : 389,894.19 = 72,946.36 : x
  2. Step 2: Convert to fraction form
    259,920.28/389,894.19 = 72,946.36/x
  3. Step 3: Cross multiply
    259,920.28x = 389,894.19 × 72,946.36
  4. Step 4: Simplify right side
    259,920.28x = 28,441,361,945.65
  5. Step 5: Solve for x
    x = 28,441,361,945.65/259,920.28
  6. Step 6: Final answer
    x = 109,423.40

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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.