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Finding the Fourth Proportional to 306,210.93, 422,585.15 and 170,258.85

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Solution

The fourth proportional to 306,210.93, 422,585.15 and 170,258.85 is: 234,965.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,210.93 : 422,585.15 = 170,258.85 : x
  2. Step 2: Convert to fraction form
    306,210.93/422,585.15 = 170,258.85/x
  3. Step 3: Cross multiply
    306,210.93x = 422,585.15 × 170,258.85
  4. Step 4: Simplify right side
    306,210.93x = 71,948,861,666.08
  5. Step 5: Solve for x
    x = 71,948,861,666.08/306,210.93
  6. Step 6: Final answer
    x = 234,965.03

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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.