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Finding the Fourth Proportional to 426,916.90, 640,375.36 and 160,737.14

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Solution

The fourth proportional to 426,916.90, 640,375.36 and 160,737.14 is: 241,105.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,916.90 : 640,375.36 = 160,737.14 : x
  2. Step 2: Convert to fraction form
    426,916.90/640,375.36 = 160,737.14/x
  3. Step 3: Cross multiply
    426,916.90x = 640,375.36 × 160,737.14
  4. Step 4: Simplify right side
    426,916.90x = 102,932,103,892.87
  5. Step 5: Solve for x
    x = 102,932,103,892.87/426,916.90
  6. Step 6: Final answer
    x = 241,105.71

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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.