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Finding the Fourth Proportional to 326,086.60, 489,133.06 and 123,628.26

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Solution

The fourth proportional to 326,086.60, 489,133.06 and 123,628.26 is: 185,443.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,086.60 : 489,133.06 = 123,628.26 : x
  2. Step 2: Convert to fraction form
    326,086.60/489,133.06 = 123,628.26/x
  3. Step 3: Cross multiply
    326,086.60x = 489,133.06 × 123,628.26
  4. Step 4: Simplify right side
    326,086.60x = 60,470,669,116.28
  5. Step 5: Solve for x
    x = 60,470,669,116.28/326,086.60
  6. Step 6: Final answer
    x = 185,443.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.