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Finding the Fourth Proportional to 371,850.90, 513,143.58 and 210,757.98

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Solution

The fourth proportional to 371,850.90, 513,143.58 and 210,757.98 is: 290,839.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,850.90 : 513,143.58 = 210,757.98 : x
  2. Step 2: Convert to fraction form
    371,850.90/513,143.58 = 210,757.98/x
  3. Step 3: Cross multiply
    371,850.90x = 513,143.58 × 210,757.98
  4. Step 4: Simplify right side
    371,850.90x = 108,149,104,370.77
  5. Step 5: Solve for x
    x = 108,149,104,370.77/371,850.90
  6. Step 6: Final answer
    x = 290,839.97

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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.