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Finding the Fourth Proportional to 289,781.96, 434,626.29 and 79,370.69

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Solution

The fourth proportional to 289,781.96, 434,626.29 and 79,370.69 is: 119,043.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,781.96 : 434,626.29 = 79,370.69 : x
  2. Step 2: Convert to fraction form
    289,781.96/434,626.29 = 79,370.69/x
  3. Step 3: Cross multiply
    289,781.96x = 434,626.29 × 79,370.69
  4. Step 4: Simplify right side
    289,781.96x = 34,496,586,356.31
  5. Step 5: Solve for x
    x = 34,496,586,356.31/289,781.96
  6. Step 6: Final answer
    x = 119,043.25

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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.