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Finding the Fourth Proportional to 193,386.53, 290,073.39 and 79,530.40

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Solution

The fourth proportional to 193,386.53, 290,073.39 and 79,530.40 is: 119,292.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,386.53 : 290,073.39 = 79,530.40 : x
  2. Step 2: Convert to fraction form
    193,386.53/290,073.39 = 79,530.40/x
  3. Step 3: Cross multiply
    193,386.53x = 290,073.39 × 79,530.40
  4. Step 4: Simplify right side
    193,386.53x = 23,069,652,736.06
  5. Step 5: Solve for x
    x = 23,069,652,736.06/193,386.53
  6. Step 6: Final answer
    x = 119,292.97

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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.