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Finding the Fourth Proportional to 353,258.29, 487,491.86 and 192,109.91

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Solution

The fourth proportional to 353,258.29, 487,491.86 and 192,109.91 is: 265,109.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,258.29 : 487,491.86 = 192,109.91 : x
  2. Step 2: Convert to fraction form
    353,258.29/487,491.86 = 192,109.91/x
  3. Step 3: Cross multiply
    353,258.29x = 487,491.86 × 192,109.91
  4. Step 4: Simplify right side
    353,258.29x = 93,652,015,171.05
  5. Step 5: Solve for x
    x = 93,652,015,171.05/353,258.29
  6. Step 6: Final answer
    x = 265,109.18

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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.