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Finding the Fourth Proportional to 303,500.70, 455,251.05 and 103,791.15

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Solution

The fourth proportional to 303,500.70, 455,251.05 and 103,791.15 is: 155,686.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,500.70 : 455,251.05 = 103,791.15 : x
  2. Step 2: Convert to fraction form
    303,500.70/455,251.05 = 103,791.15/x
  3. Step 3: Cross multiply
    303,500.70x = 455,251.05 × 103,791.15
  4. Step 4: Simplify right side
    303,500.70x = 47,251,030,018.21
  5. Step 5: Solve for x
    x = 47,251,030,018.21/303,500.70
  6. Step 6: Final answer
    x = 155,686.73

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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.