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Finding the Fourth Proportional to 292,640.34, 438,758.83 and 115,167.72

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Solution

The fourth proportional to 292,640.34, 438,758.83 and 115,167.72 is: 172,672.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,640.34 : 438,758.83 = 115,167.72 : x
  2. Step 2: Convert to fraction form
    292,640.34/438,758.83 = 115,167.72/x
  3. Step 3: Cross multiply
    292,640.34x = 438,758.83 × 115,167.72
  4. Step 4: Simplify right side
    292,640.34x = 50,530,855,222.45
  5. Step 5: Solve for x
    x = 50,530,855,222.45/292,640.34
  6. Step 6: Final answer
    x = 172,672.21

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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.