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Finding the Fourth Proportional to 210,391.90, 290,329.90 and 119,747.58

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Solution

The fourth proportional to 210,391.90, 290,329.90 and 119,747.58 is: 165,245.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,391.90 : 290,329.90 = 119,747.58 : x
  2. Step 2: Convert to fraction form
    210,391.90/290,329.90 = 119,747.58/x
  3. Step 3: Cross multiply
    210,391.90x = 290,329.90 × 119,747.58
  4. Step 4: Simplify right side
    210,391.90x = 34,766,301,538.54
  5. Step 5: Solve for x
    x = 34,766,301,538.54/210,391.90
  6. Step 6: Final answer
    x = 165,245.44

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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.