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Finding the Fourth Proportional to 303,498.10, 455,247.15 and 209,019.70

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Solution

The fourth proportional to 303,498.10, 455,247.15 and 209,019.70 is: 313,529.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,498.10 : 455,247.15 = 209,019.70 : x
  2. Step 2: Convert to fraction form
    303,498.10/455,247.15 = 209,019.70/x
  3. Step 3: Cross multiply
    303,498.10x = 455,247.15 × 209,019.70
  4. Step 4: Simplify right side
    303,498.10x = 95,155,622,718.86
  5. Step 5: Solve for x
    x = 95,155,622,718.86/303,498.10
  6. Step 6: Final answer
    x = 313,529.55

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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.