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Finding the Fourth Proportional to 368,099.28, 551,776.92 and 143,319.60

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Solution

The fourth proportional to 368,099.28, 551,776.92 and 143,319.60 is: 214,834.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,099.28 : 551,776.92 = 143,319.60 : x
  2. Step 2: Convert to fraction form
    368,099.28/551,776.92 = 143,319.60/x
  3. Step 3: Cross multiply
    368,099.28x = 551,776.92 × 143,319.60
  4. Step 4: Simplify right side
    368,099.28x = 79,080,447,463.63
  5. Step 5: Solve for x
    x = 79,080,447,463.63/368,099.28
  6. Step 6: Final answer
    x = 214,834.56

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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.