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Finding the Fourth Proportional to 381,030.75, 525,818.07 and 219,882.33

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Solution

The fourth proportional to 381,030.75, 525,818.07 and 219,882.33 is: 303,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,030.75 : 525,818.07 = 219,882.33 : x
  2. Step 2: Convert to fraction form
    381,030.75/525,818.07 = 219,882.33/x
  3. Step 3: Cross multiply
    381,030.75x = 525,818.07 × 219,882.33
  4. Step 4: Simplify right side
    381,030.75x = 115,618,102,387.70
  5. Step 5: Solve for x
    x = 115,618,102,387.70/381,030.75
  6. Step 6: Final answer
    x = 303,435.10

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1.5x scale

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.