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Finding the Fourth Proportional to 371,575.69, 512,757.29 and 210,431.89

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Solution

The fourth proportional to 371,575.69, 512,757.29 and 210,431.89 is: 290,386.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,575.69 : 512,757.29 = 210,431.89 : x
  2. Step 2: Convert to fraction form
    371,575.69/512,757.29 = 210,431.89/x
  3. Step 3: Cross multiply
    371,575.69x = 512,757.29 × 210,431.89
  4. Step 4: Simplify right side
    371,575.69x = 107,900,485,645.98
  5. Step 5: Solve for x
    x = 107,900,485,645.98/371,575.69
  6. Step 6: Final answer
    x = 290,386.29

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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.