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Finding the Fourth Proportional to 306,009.77, 422,285.04 and 170,040.23

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Solution

The fourth proportional to 306,009.77, 422,285.04 and 170,040.23 is: 234,650.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,009.77 : 422,285.04 = 170,040.23 : x
  2. Step 2: Convert to fraction form
    306,009.77/422,285.04 = 170,040.23/x
  3. Step 3: Cross multiply
    306,009.77x = 422,285.04 × 170,040.23
  4. Step 4: Simplify right side
    306,009.77x = 71,805,445,436.95
  5. Step 5: Solve for x
    x = 71,805,445,436.95/306,009.77
  6. Step 6: Final answer
    x = 234,650.83

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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.