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Finding the Fourth Proportional to 303,479.10, 455,175.45 and 103,808.70

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Solution

The fourth proportional to 303,479.10, 455,175.45 and 103,808.70 is: 155,698.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,479.10 : 455,175.45 = 103,808.70 : x
  2. Step 2: Convert to fraction form
    303,479.10/455,175.45 = 103,808.70/x
  3. Step 3: Cross multiply
    303,479.10x = 455,175.45 × 103,808.70
  4. Step 4: Simplify right side
    303,479.10x = 47,251,171,736.42
  5. Step 5: Solve for x
    x = 47,251,171,736.42/303,479.10
  6. Step 6: Final answer
    x = 155,698.27

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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.