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Finding the Fourth Proportional to 381,126.06, 525,916.03 and 220,033.10

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Solution

The fourth proportional to 381,126.06, 525,916.03 and 220,033.10 is: 303,623.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,126.06 : 525,916.03 = 220,033.10 : x
  2. Step 2: Convert to fraction form
    381,126.06/525,916.03 = 220,033.10/x
  3. Step 3: Cross multiply
    381,126.06x = 525,916.03 × 220,033.10
  4. Step 4: Simplify right side
    381,126.06x = 115,718,934,420.59
  5. Step 5: Solve for x
    x = 115,718,934,420.59/381,126.06
  6. Step 6: Final answer
    x = 303,623.78

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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.