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Finding the Fourth Proportional to 306,498.36, 422,959.50 and 170,532.48

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Solution

The fourth proportional to 306,498.36, 422,959.50 and 170,532.48 is: 235,330.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,498.36 : 422,959.50 = 170,532.48 : x
  2. Step 2: Convert to fraction form
    306,498.36/422,959.50 = 170,532.48/x
  3. Step 3: Cross multiply
    306,498.36x = 422,959.50 × 170,532.48
  4. Step 4: Simplify right side
    306,498.36x = 72,128,332,474.56
  5. Step 5: Solve for x
    x = 72,128,332,474.56/306,498.36
  6. Step 6: Final answer
    x = 235,330.24

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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.