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Finding the Fourth Proportional to 303,497.10, 455,245.65 and 209,018.70

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Solution

The fourth proportional to 303,497.10, 455,245.65 and 209,018.70 is: 313,528.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,497.10 : 455,245.65 = 209,018.70 : x
  2. Step 2: Convert to fraction form
    303,497.10/455,245.65 = 209,018.70/x
  3. Step 3: Cross multiply
    303,497.10x = 455,245.65 × 209,018.70
  4. Step 4: Simplify right side
    303,497.10x = 95,154,853,943.66
  5. Step 5: Solve for x
    x = 95,154,853,943.66/303,497.10
  6. Step 6: Final answer
    x = 313,528.05

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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.