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Finding the Fourth Proportional to 251,851.34, 375,934.42 and 221,958.74

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Solution

The fourth proportional to 251,851.34, 375,934.42 and 221,958.74 is: 331,314.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,851.34 : 375,934.42 = 221,958.74 : x
  2. Step 2: Convert to fraction form
    251,851.34/375,934.42 = 221,958.74/x
  3. Step 3: Cross multiply
    251,851.34x = 375,934.42 × 221,958.74
  4. Step 4: Simplify right side
    251,851.34x = 83,441,930,185.83
  5. Step 5: Solve for x
    x = 83,441,930,185.83/251,851.34
  6. Step 6: Final answer
    x = 331,314.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.