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Finding the Fourth Proportional to 303,938.20, 455,251.20 and 251,450.20

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Solution

The fourth proportional to 303,938.20, 455,251.20 and 251,450.20 is: 376,632.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,938.20 : 455,251.20 = 251,450.20 : x
  2. Step 2: Convert to fraction form
    303,938.20/455,251.20 = 251,450.20/x
  3. Step 3: Cross multiply
    303,938.20x = 455,251.20 × 251,450.20
  4. Step 4: Simplify right side
    303,938.20x = 114,473,005,290.24
  5. Step 5: Solve for x
    x = 114,473,005,290.24/303,938.20
  6. Step 6: Final answer
    x = 376,632.50

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1.5x scale

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.