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Finding the Fourth Proportional to 368,143.92, 507,916.48 and 300,043.88

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Solution

The fourth proportional to 368,143.92, 507,916.48 and 300,043.88 is: 413,961.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,143.92 : 507,916.48 = 300,043.88 : x
  2. Step 2: Convert to fraction form
    368,143.92/507,916.48 = 300,043.88/x
  3. Step 3: Cross multiply
    368,143.92x = 507,916.48 × 300,043.88
  4. Step 4: Simplify right side
    368,143.92x = 152,397,231,375.14
  5. Step 5: Solve for x
    x = 152,397,231,375.14/368,143.92
  6. Step 6: Final answer
    x = 413,961.02

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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.