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Finding the Fourth Proportional to 210,403.92, 290,372.98 and 119,789.22

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Solution

The fourth proportional to 210,403.92, 290,372.98 and 119,789.22 is: 165,317.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,403.92 : 290,372.98 = 119,789.22 : x
  2. Step 2: Convert to fraction form
    210,403.92/290,372.98 = 119,789.22/x
  3. Step 3: Cross multiply
    210,403.92x = 290,372.98 × 119,789.22
  4. Step 4: Simplify right side
    210,403.92x = 34,783,552,483.80
  5. Step 5: Solve for x
    x = 34,783,552,483.80/210,403.92
  6. Step 6: Final answer
    x = 165,317.99

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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.