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Finding the Fourth Proportional to 216,878.60, 299,301.80 and 120,082.44

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Solution

The fourth proportional to 216,878.60, 299,301.80 and 120,082.44 is: 165,718.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,878.60 : 299,301.80 = 120,082.44 : x
  2. Step 2: Convert to fraction form
    216,878.60/299,301.80 = 120,082.44/x
  3. Step 3: Cross multiply
    216,878.60x = 299,301.80 × 120,082.44
  4. Step 4: Simplify right side
    216,878.60x = 35,940,890,740.60
  5. Step 5: Solve for x
    x = 35,940,890,740.60/216,878.60
  6. Step 6: Final answer
    x = 165,718.94

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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.