Home / 423,623.40-635,435.10-143,136.60

Finding the Fourth Proportional to 423,623.40, 635,435.10 and 143,136.60

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Solution

The fourth proportional to 423,623.40, 635,435.10 and 143,136.60 is: 214,704.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,623.40 : 635,435.10 = 143,136.60 : x
  2. Step 2: Convert to fraction form
    423,623.40/635,435.10 = 143,136.60/x
  3. Step 3: Cross multiply
    423,623.40x = 635,435.10 × 143,136.60
  4. Step 4: Simplify right side
    423,623.40x = 90,954,019,734.66
  5. Step 5: Solve for x
    x = 90,954,019,734.66/423,623.40
  6. Step 6: Final answer
    x = 214,704.90

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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.