Home / 428,232.30-642,358.71-143,926.98

Finding the Fourth Proportional to 428,232.30, 642,358.71 and 143,926.98

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Solution

The fourth proportional to 428,232.30, 642,358.71 and 143,926.98 is: 215,893.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,232.30 : 642,358.71 = 143,926.98 : x
  2. Step 2: Convert to fraction form
    428,232.30/642,358.71 = 143,926.98/x
  3. Step 3: Cross multiply
    428,232.30x = 642,358.71 × 143,926.98
  4. Step 4: Simplify right side
    428,232.30x = 92,452,749,207.00
  5. Step 5: Solve for x
    x = 92,452,749,207.00/428,232.30
  6. Step 6: Final answer
    x = 215,893.92

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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.