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Finding the Fourth Proportional to 192,659.40, 288,917.38 and 66,264.16

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Solution

The fourth proportional to 192,659.40, 288,917.38 and 66,264.16 is: 99,371.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,659.40 : 288,917.38 = 66,264.16 : x
  2. Step 2: Convert to fraction form
    192,659.40/288,917.38 = 66,264.16/x
  3. Step 3: Cross multiply
    192,659.40x = 288,917.38 × 66,264.16
  4. Step 4: Simplify right side
    192,659.40x = 19,144,867,495.10
  5. Step 5: Solve for x
    x = 19,144,867,495.10/192,659.40
  6. Step 6: Final answer
    x = 99,371.57

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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.