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Finding the Fourth Proportional to 201,388.84, 277,916.20 and 115,375.67

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Solution

The fourth proportional to 201,388.84, 277,916.20 and 115,375.67 is: 159,218.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,388.84 : 277,916.20 = 115,375.67 : x
  2. Step 2: Convert to fraction form
    201,388.84/277,916.20 = 115,375.67/x
  3. Step 3: Cross multiply
    201,388.84x = 277,916.20 × 115,375.67
  4. Step 4: Simplify right side
    201,388.84x = 32,064,767,778.85
  5. Step 5: Solve for x
    x = 32,064,767,778.85/201,388.84
  6. Step 6: Final answer
    x = 159,218.20

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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.