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Finding the Fourth Proportional to 210,609.37, 290,640.51 and 119,965.30

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Solution

The fourth proportional to 210,609.37, 290,640.51 and 119,965.30 is: 165,551.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,609.37 : 290,640.51 = 119,965.30 : x
  2. Step 2: Convert to fraction form
    210,609.37/290,640.51 = 119,965.30/x
  3. Step 3: Cross multiply
    210,609.37x = 290,640.51 × 119,965.30
  4. Step 4: Simplify right side
    210,609.37x = 34,866,775,974.30
  5. Step 5: Solve for x
    x = 34,866,775,974.30/210,609.37
  6. Step 6: Final answer
    x = 165,551.87

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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.