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Finding the Fourth Proportional to 199,129.60, 298,579.20 and 74,483.20

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Solution

The fourth proportional to 199,129.60, 298,579.20 and 74,483.20 is: 111,681.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,129.60 : 298,579.20 = 74,483.20 : x
  2. Step 2: Convert to fraction form
    199,129.60/298,579.20 = 74,483.20/x
  3. Step 3: Cross multiply
    199,129.60x = 298,579.20 × 74,483.20
  4. Step 4: Simplify right side
    199,129.60x = 22,239,134,269.44
  5. Step 5: Solve for x
    x = 22,239,134,269.44/199,129.60
  6. Step 6: Final answer
    x = 111,681.71

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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.