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Finding the Fourth Proportional to 381,030.53, 525,814.47 and 219,881.43

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Solution

The fourth proportional to 381,030.53, 525,814.47 and 219,881.43 is: 303,431.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,030.53 : 525,814.47 = 219,881.43 : x
  2. Step 2: Convert to fraction form
    381,030.53/525,814.47 = 219,881.43/x
  3. Step 3: Cross multiply
    381,030.53x = 525,814.47 × 219,881.43
  4. Step 4: Simplify right side
    381,030.53x = 115,616,837,578.29
  5. Step 5: Solve for x
    x = 115,616,837,578.29/381,030.53
  6. Step 6: Final answer
    x = 303,431.96

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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.