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Finding the Fourth Proportional to 342,495.29, 472,631.90 and 189,539.96

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Solution

The fourth proportional to 342,495.29, 472,631.90 and 189,539.96 is: 261,558.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,495.29 : 472,631.90 = 189,539.96 : x
  2. Step 2: Convert to fraction form
    342,495.29/472,631.90 = 189,539.96/x
  3. Step 3: Cross multiply
    342,495.29x = 472,631.90 × 189,539.96
  4. Step 4: Simplify right side
    342,495.29x = 89,582,628,109.86
  5. Step 5: Solve for x
    x = 89,582,628,109.86/342,495.29
  6. Step 6: Final answer
    x = 261,558.71

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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.