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Finding the Fourth Proportional to 279,647.35, 418,689.33 and 151,103.09

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Solution

The fourth proportional to 279,647.35, 418,689.33 and 151,103.09 is: 226,232.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,647.35 : 418,689.33 = 151,103.09 : x
  2. Step 2: Convert to fraction form
    279,647.35/418,689.33 = 151,103.09/x
  3. Step 3: Cross multiply
    279,647.35x = 418,689.33 × 151,103.09
  4. Step 4: Simplify right side
    279,647.35x = 63,265,248,852.95
  5. Step 5: Solve for x
    x = 63,265,248,852.95/279,647.35
  6. Step 6: Final answer
    x = 226,232.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.