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Finding the Fourth Proportional to 216,034.90, 323,614.95 and 122,431.30

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Solution

The fourth proportional to 216,034.90, 323,614.95 and 122,431.30 is: 183,399.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,034.90 : 323,614.95 = 122,431.30 : x
  2. Step 2: Convert to fraction form
    216,034.90/323,614.95 = 122,431.30/x
  3. Step 3: Cross multiply
    216,034.90x = 323,614.95 × 122,431.30
  4. Step 4: Simplify right side
    216,034.90x = 39,620,599,027.94
  5. Step 5: Solve for x
    x = 39,620,599,027.94/216,034.90
  6. Step 6: Final answer
    x = 183,399.07

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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.