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Finding the Fourth Proportional to 372,394, 513,899.40 and 202,625.20

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Solution

The fourth proportional to 372,394, 513,899.40 and 202,625.20 is: 279,620.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,394 : 513,899.40 = 202,625.20 : x
  2. Step 2: Convert to fraction form
    372,394/513,899.40 = 202,625.20/x
  3. Step 3: Cross multiply
    372,394x = 513,899.40 × 202,625.20
  4. Step 4: Simplify right side
    372,394x = 104,128,968,704.88
  5. Step 5: Solve for x
    x = 104,128,968,704.88/372,394
  6. Step 6: Final answer
    x = 279,620.43

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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.