Home / 423,629.40-635,444.10-143,142.60

Finding the Fourth Proportional to 423,629.40, 635,444.10 and 143,142.60

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Solution

The fourth proportional to 423,629.40, 635,444.10 and 143,142.60 is: 214,713.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,629.40 : 635,444.10 = 143,142.60 : x
  2. Step 2: Convert to fraction form
    423,629.40/635,444.10 = 143,142.60/x
  3. Step 3: Cross multiply
    423,629.40x = 635,444.10 × 143,142.60
  4. Step 4: Simplify right side
    423,629.40x = 90,959,120,628.66
  5. Step 5: Solve for x
    x = 90,959,120,628.66/423,629.40
  6. Step 6: Final answer
    x = 214,713.90

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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.