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Finding the Fourth Proportional to 381,072.16, 525,841.68 and 219,979.11

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Solution

The fourth proportional to 381,072.16, 525,841.68 and 219,979.11 is: 303,549.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,072.16 : 525,841.68 = 219,979.11 : x
  2. Step 2: Convert to fraction form
    381,072.16/525,841.68 = 219,979.11/x
  3. Step 3: Cross multiply
    381,072.16x = 525,841.68 × 219,979.11
  4. Step 4: Simplify right side
    381,072.16x = 115,674,183,368.89
  5. Step 5: Solve for x
    x = 115,674,183,368.89/381,072.16
  6. Step 6: Final answer
    x = 303,549.29

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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.