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Finding the Fourth Proportional to 216,665.68, 298,986.12 and 119,863.76

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Solution

The fourth proportional to 216,665.68, 298,986.12 and 119,863.76 is: 165,405.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,665.68 : 298,986.12 = 119,863.76 : x
  2. Step 2: Convert to fraction form
    216,665.68/298,986.12 = 119,863.76/x
  3. Step 3: Cross multiply
    216,665.68x = 298,986.12 × 119,863.76
  4. Step 4: Simplify right side
    216,665.68x = 35,837,600,531.01
  5. Step 5: Solve for x
    x = 35,837,600,531.01/216,665.68
  6. Step 6: Final answer
    x = 165,405.06

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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.