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Finding the Fourth Proportional to 306,437.67, 422,887.23 and 168,618.42

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Solution

The fourth proportional to 306,437.67, 422,887.23 and 168,618.42 is: 232,695.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,437.67 : 422,887.23 = 168,618.42 : x
  2. Step 2: Convert to fraction form
    306,437.67/422,887.23 = 168,618.42/x
  3. Step 3: Cross multiply
    306,437.67x = 422,887.23 × 168,618.42
  4. Step 4: Simplify right side
    306,437.67x = 71,306,576,560.78
  5. Step 5: Solve for x
    x = 71,306,576,560.78/306,437.67
  6. Step 6: Final answer
    x = 232,695.21

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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.