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Finding the Fourth Proportional to 617,213.70, 925,820.55 and 217,851.30

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Solution

The fourth proportional to 617,213.70, 925,820.55 and 217,851.30 is: 326,776.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,213.70 : 925,820.55 = 217,851.30 : x
  2. Step 2: Convert to fraction form
    617,213.70/925,820.55 = 217,851.30/x
  3. Step 3: Cross multiply
    617,213.70x = 925,820.55 × 217,851.30
  4. Step 4: Simplify right side
    617,213.70x = 201,691,210,384.22
  5. Step 5: Solve for x
    x = 201,691,210,384.22/617,213.70
  6. Step 6: Final answer
    x = 326,776.95

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Double scale
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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.