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Finding the Fourth Proportional to 303,434.10, 455,151.15 and 197,145.90

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Solution

The fourth proportional to 303,434.10, 455,151.15 and 197,145.90 is: 295,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,434.10 : 455,151.15 = 197,145.90 : x
  2. Step 2: Convert to fraction form
    303,434.10/455,151.15 = 197,145.90/x
  3. Step 3: Cross multiply
    303,434.10x = 455,151.15 × 197,145.90
  4. Step 4: Simplify right side
    303,434.10x = 89,731,183,102.79
  5. Step 5: Solve for x
    x = 89,731,183,102.79/303,434.10
  6. Step 6: Final answer
    x = 295,718.85

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Similar ratio
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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.