Home / 216,431.38-298,669.57-120,938.86

Finding the Fourth Proportional to 216,431.38, 298,669.57 and 120,938.86

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Solution

The fourth proportional to 216,431.38, 298,669.57 and 120,938.86 is: 166,892.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,431.38 : 298,669.57 = 120,938.86 : x
  2. Step 2: Convert to fraction form
    216,431.38/298,669.57 = 120,938.86/x
  3. Step 3: Cross multiply
    216,431.38x = 298,669.57 × 120,938.86
  4. Step 4: Simplify right side
    216,431.38x = 36,120,757,312.49
  5. Step 5: Solve for x
    x = 36,120,757,312.49/216,431.38
  6. Step 6: Final answer
    x = 166,892.42

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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.