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Finding the Fourth Proportional to 307,664.40, 461,496.60 and 218,434.80

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Solution

The fourth proportional to 307,664.40, 461,496.60 and 218,434.80 is: 327,652.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,664.40 : 461,496.60 = 218,434.80 : x
  2. Step 2: Convert to fraction form
    307,664.40/461,496.60 = 218,434.80/x
  3. Step 3: Cross multiply
    307,664.40x = 461,496.60 × 218,434.80
  4. Step 4: Simplify right side
    307,664.40x = 100,806,917,521.68
  5. Step 5: Solve for x
    x = 100,806,917,521.68/307,664.40
  6. Step 6: Final answer
    x = 327,652.20

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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.