Home / 381,913.43-527,041.98-209,845.31

Finding the Fourth Proportional to 381,913.43, 527,041.98 and 209,845.31

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Solution

The fourth proportional to 381,913.43, 527,041.98 and 209,845.31 is: 289,587.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,913.43 : 527,041.98 = 209,845.31 : x
  2. Step 2: Convert to fraction form
    381,913.43/527,041.98 = 209,845.31/x
  3. Step 3: Cross multiply
    381,913.43x = 527,041.98 × 209,845.31
  4. Step 4: Simplify right side
    381,913.43x = 110,597,285,040.90
  5. Step 5: Solve for x
    x = 110,597,285,040.90/381,913.43
  6. Step 6: Final answer
    x = 289,587.32

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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.