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Finding the Fourth Proportional to 289,480.38, 434,232.75 and 79,117.74

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Solution

The fourth proportional to 289,480.38, 434,232.75 and 79,117.74 is: 118,679.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,480.38 : 434,232.75 = 79,117.74 : x
  2. Step 2: Convert to fraction form
    289,480.38/434,232.75 = 79,117.74/x
  3. Step 3: Cross multiply
    289,480.38x = 434,232.75 × 79,117.74
  4. Step 4: Simplify right side
    289,480.38x = 34,355,513,813.99
  5. Step 5: Solve for x
    x = 34,355,513,813.99/289,480.38
  6. Step 6: Final answer
    x = 118,679.94

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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.