Home / 428,527.10-642,797.14-162,216.12

Finding the Fourth Proportional to 428,527.10, 642,797.14 and 162,216.12

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Solution

The fourth proportional to 428,527.10, 642,797.14 and 162,216.12 is: 243,326.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,527.10 : 642,797.14 = 162,216.12 : x
  2. Step 2: Convert to fraction form
    428,527.10/642,797.14 = 162,216.12/x
  3. Step 3: Cross multiply
    428,527.10x = 642,797.14 × 162,216.12
  4. Step 4: Simplify right side
    428,527.10x = 104,272,057,997.90
  5. Step 5: Solve for x
    x = 104,272,057,997.90/428,527.10
  6. Step 6: Final answer
    x = 243,326.64

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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.