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Finding the Fourth Proportional to 306,641.38, 423,169.11 and 168,836.33

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Solution

The fourth proportional to 306,641.38, 423,169.11 and 168,836.33 is: 232,996.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,641.38 : 423,169.11 = 168,836.33 : x
  2. Step 2: Convert to fraction form
    306,641.38/423,169.11 = 168,836.33/x
  3. Step 3: Cross multiply
    306,641.38x = 423,169.11 × 168,836.33
  4. Step 4: Simplify right side
    306,641.38x = 71,446,318,657.58
  5. Step 5: Solve for x
    x = 71,446,318,657.58/306,641.38
  6. Step 6: Final answer
    x = 232,996.34

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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.