Home / 312,709.17-431,539.04-169,469.21

Finding the Fourth Proportional to 312,709.17, 431,539.04 and 169,469.21

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Solution

The fourth proportional to 312,709.17, 431,539.04 and 169,469.21 is: 233,867.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,709.17 : 431,539.04 = 169,469.21 : x
  2. Step 2: Convert to fraction form
    312,709.17/431,539.04 = 169,469.21/x
  3. Step 3: Cross multiply
    312,709.17x = 431,539.04 × 169,469.21
  4. Step 4: Simplify right side
    312,709.17x = 73,132,581,695.48
  5. Step 5: Solve for x
    x = 73,132,581,695.48/312,709.17
  6. Step 6: Final answer
    x = 233,867.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.