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Finding the Fourth Proportional to 234,581.79, 351,818.72 and 139,838.73

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Solution

The fourth proportional to 234,581.79, 351,818.72 and 139,838.73 is: 209,725.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,581.79 : 351,818.72 = 139,838.73 : x
  2. Step 2: Convert to fraction form
    234,581.79/351,818.72 = 139,838.73/x
  3. Step 3: Cross multiply
    234,581.79x = 351,818.72 × 139,838.73
  4. Step 4: Simplify right side
    234,581.79x = 49,197,882,995.03
  5. Step 5: Solve for x
    x = 49,197,882,995.03/234,581.79
  6. Step 6: Final answer
    x = 209,725.93

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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.