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Finding the Fourth Proportional to 143,907.84, 215,837.46 and 38,703.42

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Solution

The fourth proportional to 143,907.84, 215,837.46 and 38,703.42 is: 58,048.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,907.84 : 215,837.46 = 38,703.42 : x
  2. Step 2: Convert to fraction form
    143,907.84/215,837.46 = 38,703.42/x
  3. Step 3: Cross multiply
    143,907.84x = 215,837.46 × 38,703.42
  4. Step 4: Simplify right side
    143,907.84x = 8,353,647,866.11
  5. Step 5: Solve for x
    x = 8,353,647,866.11/143,907.84
  6. Step 6: Final answer
    x = 58,048.59

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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.