Home / 428,634.30-642,951.45-144,301.08

Finding the Fourth Proportional to 428,634.30, 642,951.45 and 144,301.08

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Solution

The fourth proportional to 428,634.30, 642,951.45 and 144,301.08 is: 216,451.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,634.30 : 642,951.45 = 144,301.08 : x
  2. Step 2: Convert to fraction form
    428,634.30/642,951.45 = 144,301.08/x
  3. Step 3: Cross multiply
    428,634.30x = 642,951.45 × 144,301.08
  4. Step 4: Simplify right side
    428,634.30x = 92,778,588,622.57
  5. Step 5: Solve for x
    x = 92,778,588,622.57/428,634.30
  6. Step 6: Final answer
    x = 216,451.62

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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.