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Finding the Fourth Proportional to 242,470.92, 334,580.45 and 139,099.76

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Solution

The fourth proportional to 242,470.92, 334,580.45 and 139,099.76 is: 191,940.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,470.92 : 334,580.45 = 139,099.76 : x
  2. Step 2: Convert to fraction form
    242,470.92/334,580.45 = 139,099.76/x
  3. Step 3: Cross multiply
    242,470.92x = 334,580.45 × 139,099.76
  4. Step 4: Simplify right side
    242,470.92x = 46,540,057,927.29
  5. Step 5: Solve for x
    x = 46,540,057,927.29/242,470.92
  6. Step 6: Final answer
    x = 191,940.78

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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.