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Finding the Fourth Proportional to 216,461.43, 298,715.90 and 120,968.10

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Solution

The fourth proportional to 216,461.43, 298,715.90 and 120,968.10 is: 166,935.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,461.43 : 298,715.90 = 120,968.10 : x
  2. Step 2: Convert to fraction form
    216,461.43/298,715.90 = 120,968.10/x
  3. Step 3: Cross multiply
    216,461.43x = 298,715.90 × 120,968.10
  4. Step 4: Simplify right side
    216,461.43x = 36,135,094,862.79
  5. Step 5: Solve for x
    x = 36,135,094,862.79/216,461.43
  6. Step 6: Final answer
    x = 166,935.49

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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.