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Finding the Fourth Proportional to 306,447.73, 422,890.54 and 170,482.21

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Solution

The fourth proportional to 306,447.73, 422,890.54 and 170,482.21 is: 235,261.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,447.73 : 422,890.54 = 170,482.21 : x
  2. Step 2: Convert to fraction form
    306,447.73/422,890.54 = 170,482.21/x
  3. Step 3: Cross multiply
    306,447.73x = 422,890.54 × 170,482.21
  4. Step 4: Simplify right side
    306,447.73x = 72,095,313,847.29
  5. Step 5: Solve for x
    x = 72,095,313,847.29/306,447.73
  6. Step 6: Final answer
    x = 235,261.37

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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.