Home / 643,136.20-964,013.10-243,622.60

Finding the Fourth Proportional to 643,136.20, 964,013.10 and 243,622.60

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Solution

The fourth proportional to 643,136.20, 964,013.10 and 243,622.60 is: 365,172.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,136.20 : 964,013.10 = 243,622.60 : x
  2. Step 2: Convert to fraction form
    643,136.20/964,013.10 = 243,622.60/x
  3. Step 3: Cross multiply
    643,136.20x = 964,013.10 × 243,622.60
  4. Step 4: Simplify right side
    643,136.20x = 234,855,377,856.06
  5. Step 5: Solve for x
    x = 234,855,377,856.06/643,136.20
  6. Step 6: Final answer
    x = 365,172.07

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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.