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Finding the Fourth Proportional to 303,823.62, 455,832.78 and 212,733.90

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Solution

The fourth proportional to 303,823.62, 455,832.78 and 212,733.90 is: 319,169.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,823.62 : 455,832.78 = 212,733.90 : x
  2. Step 2: Convert to fraction form
    303,823.62/455,832.78 = 212,733.90/x
  3. Step 3: Cross multiply
    303,823.62x = 455,832.78 × 212,733.90
  4. Step 4: Simplify right side
    303,823.62x = 96,971,085,037.24
  5. Step 5: Solve for x
    x = 96,971,085,037.24/303,823.62
  6. Step 6: Final answer
    x = 319,169.01

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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.