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Finding the Fourth Proportional to 367,412.76, 551,154 and 142,790.55

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Solution

The fourth proportional to 367,412.76, 551,154 and 142,790.55 is: 214,199.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,412.76 : 551,154 = 142,790.55 : x
  2. Step 2: Convert to fraction form
    367,412.76/551,154 = 142,790.55/x
  3. Step 3: Cross multiply
    367,412.76x = 551,154 × 142,790.55
  4. Step 4: Simplify right side
    367,412.76x = 78,699,582,794.70
  5. Step 5: Solve for x
    x = 78,699,582,794.70/367,412.76
  6. Step 6: Final answer
    x = 214,199.37

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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.