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Finding the Fourth Proportional to 367,395.75, 551,128.40 and 142,773.50

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Solution

The fourth proportional to 367,395.75, 551,128.40 and 142,773.50 is: 214,173.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,395.75 : 551,128.40 = 142,773.50 : x
  2. Step 2: Convert to fraction form
    367,395.75/551,128.40 = 142,773.50/x
  3. Step 3: Cross multiply
    367,395.75x = 551,128.40 × 142,773.50
  4. Step 4: Simplify right side
    367,395.75x = 78,686,532,352.15
  5. Step 5: Solve for x
    x = 78,686,532,352.15/367,395.75
  6. Step 6: Final answer
    x = 214,173.77

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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.