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Finding the Fourth Proportional to 617,163, 925,505.20 and 212,278.22

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Solution

The fourth proportional to 617,163, 925,505.20 and 212,278.22 is: 318,335.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,163 : 925,505.20 = 212,278.22 : x
  2. Step 2: Convert to fraction form
    617,163/925,505.20 = 212,278.22/x
  3. Step 3: Cross multiply
    617,163x = 925,505.20 × 212,278.22
  4. Step 4: Simplify right side
    617,163x = 196,464,596,456.74
  5. Step 5: Solve for x
    x = 196,464,596,456.74/617,163
  6. Step 6: Final answer
    x = 318,335.02

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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.