Home / 427,783.28-641,708.04-143,475.44

Finding the Fourth Proportional to 427,783.28, 641,708.04 and 143,475.44

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Solution

The fourth proportional to 427,783.28, 641,708.04 and 143,475.44 is: 215,224.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,783.28 : 641,708.04 = 143,475.44 : x
  2. Step 2: Convert to fraction form
    427,783.28/641,708.04 = 143,475.44/x
  3. Step 3: Cross multiply
    427,783.28x = 641,708.04 × 143,475.44
  4. Step 4: Simplify right side
    427,783.28x = 92,069,343,390.54
  5. Step 5: Solve for x
    x = 92,069,343,390.54/427,783.28
  6. Step 6: Final answer
    x = 215,224.27

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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.