Home / 381,125.15-525,949.10-209,039.57

Finding the Fourth Proportional to 381,125.15, 525,949.10 and 209,039.57

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Solution

The fourth proportional to 381,125.15, 525,949.10 and 209,039.57 is: 288,472.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,125.15 : 525,949.10 = 209,039.57 : x
  2. Step 2: Convert to fraction form
    381,125.15/525,949.10 = 209,039.57/x
  3. Step 3: Cross multiply
    381,125.15x = 525,949.10 × 209,039.57
  4. Step 4: Simplify right side
    381,125.15x = 109,944,172,787.15
  5. Step 5: Solve for x
    x = 109,944,172,787.15/381,125.15
  6. Step 6: Final answer
    x = 288,472.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.