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Finding the Fourth Proportional to 242,471.92, 334,581.82 and 139,100.76

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Solution

The fourth proportional to 242,471.92, 334,581.82 and 139,100.76 is: 191,942.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,471.92 : 334,581.82 = 139,100.76 : x
  2. Step 2: Convert to fraction form
    242,471.92/334,581.82 = 139,100.76/x
  3. Step 3: Cross multiply
    242,471.92x = 334,581.82 × 139,100.76
  4. Step 4: Simplify right side
    242,471.92x = 46,540,585,444.18
  5. Step 5: Solve for x
    x = 46,540,585,444.18/242,471.92
  6. Step 6: Final answer
    x = 191,942.17

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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.