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Finding the Fourth Proportional to 367,548.14, 551,063.01 and 142,721.30

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Solution

The fourth proportional to 367,548.14, 551,063.01 and 142,721.30 is: 213,981.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,548.14 : 551,063.01 = 142,721.30 : x
  2. Step 2: Convert to fraction form
    367,548.14/551,063.01 = 142,721.30/x
  3. Step 3: Cross multiply
    367,548.14x = 551,063.01 × 142,721.30
  4. Step 4: Simplify right side
    367,548.14x = 78,648,429,169.11
  5. Step 5: Solve for x
    x = 78,648,429,169.11/367,548.14
  6. Step 6: Final answer
    x = 213,981.30

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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.