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Finding the Fourth Proportional to 209,779, 289,484.89 and 119,122.99

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Solution

The fourth proportional to 209,779, 289,484.89 and 119,122.99 is: 164,383.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,779 : 289,484.89 = 119,122.99 : x
  2. Step 2: Convert to fraction form
    209,779/289,484.89 = 119,122.99/x
  3. Step 3: Cross multiply
    209,779x = 289,484.89 × 119,122.99
  4. Step 4: Simplify right side
    209,779x = 34,484,305,656.62
  5. Step 5: Solve for x
    x = 34,484,305,656.62/209,779
  6. Step 6: Final answer
    x = 164,383.97

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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.