Home / 428,651.67-642,575.17-144,143.25

Finding the Fourth Proportional to 428,651.67, 642,575.17 and 144,143.25

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Solution

The fourth proportional to 428,651.67, 642,575.17 and 144,143.25 is: 216,079.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,651.67 : 642,575.17 = 144,143.25 : x
  2. Step 2: Convert to fraction form
    428,651.67/642,575.17 = 144,143.25/x
  3. Step 3: Cross multiply
    428,651.67x = 642,575.17 × 144,143.25
  4. Step 4: Simplify right side
    428,651.67x = 92,622,873,373.10
  5. Step 5: Solve for x
    x = 92,622,873,373.10/428,651.67
  6. Step 6: Final answer
    x = 216,079.58

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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.