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Finding the Fourth Proportional to 368,405.28, 552,627.36 and 119,106.72

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Solution

The fourth proportional to 368,405.28, 552,627.36 and 119,106.72 is: 178,666.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,405.28 : 552,627.36 = 119,106.72 : x
  2. Step 2: Convert to fraction form
    368,405.28/552,627.36 = 119,106.72/x
  3. Step 3: Cross multiply
    368,405.28x = 552,627.36 × 119,106.72
  4. Step 4: Simplify right side
    368,405.28x = 65,821,632,231.86
  5. Step 5: Solve for x
    x = 65,821,632,231.86/368,405.28
  6. Step 6: Final answer
    x = 178,666.37

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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.