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Finding the Fourth Proportional to 424,662.68, 637,016.34 and 109,121.72

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Solution

The fourth proportional to 424,662.68, 637,016.34 and 109,121.72 is: 163,688.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,662.68 : 637,016.34 = 109,121.72 : x
  2. Step 2: Convert to fraction form
    424,662.68/637,016.34 = 109,121.72/x
  3. Step 3: Cross multiply
    424,662.68x = 637,016.34 × 109,121.72
  4. Step 4: Simplify right side
    424,662.68x = 69,512,318,688.90
  5. Step 5: Solve for x
    x = 69,512,318,688.90/424,662.68
  6. Step 6: Final answer
    x = 163,688.32

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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.