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Finding the Fourth Proportional to 568,221.16, 784,149.78 and 310,100.14

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Solution

The fourth proportional to 568,221.16, 784,149.78 and 310,100.14 is: 427,940.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,221.16 : 784,149.78 = 310,100.14 : x
  2. Step 2: Convert to fraction form
    568,221.16/784,149.78 = 310,100.14/x
  3. Step 3: Cross multiply
    568,221.16x = 784,149.78 × 310,100.14
  4. Step 4: Simplify right side
    568,221.16x = 243,164,956,558.97
  5. Step 5: Solve for x
    x = 243,164,956,558.97/568,221.16
  6. Step 6: Final answer
    x = 427,940.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.