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Finding the Fourth Proportional to 303,467.20, 455,719.20 and 198,750.40

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Solution

The fourth proportional to 303,467.20, 455,719.20 and 198,750.40 is: 298,465.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,467.20 : 455,719.20 = 198,750.40 : x
  2. Step 2: Convert to fraction form
    303,467.20/455,719.20 = 198,750.40/x
  3. Step 3: Cross multiply
    303,467.20x = 455,719.20 × 198,750.40
  4. Step 4: Simplify right side
    303,467.20x = 90,574,373,287.68
  5. Step 5: Solve for x
    x = 90,574,373,287.68/303,467.20
  6. Step 6: Final answer
    x = 298,465.12

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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.