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Finding the Fourth Proportional to 303,496.20, 455,244.30 and 209,017.80

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Solution

The fourth proportional to 303,496.20, 455,244.30 and 209,017.80 is: 313,526.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,496.20 : 455,244.30 = 209,017.80 : x
  2. Step 2: Convert to fraction form
    303,496.20/455,244.30 = 209,017.80/x
  3. Step 3: Cross multiply
    303,496.20x = 455,244.30 × 209,017.80
  4. Step 4: Simplify right side
    303,496.20x = 95,154,162,048.54
  5. Step 5: Solve for x
    x = 95,154,162,048.54/303,496.20
  6. Step 6: Final answer
    x = 313,526.70

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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.