Home / 312,929.28-431,834.76-169,685.64

Finding the Fourth Proportional to 312,929.28, 431,834.76 and 169,685.64

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Solution

The fourth proportional to 312,929.28, 431,834.76 and 169,685.64 is: 234,162.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,929.28 : 431,834.76 = 169,685.64 : x
  2. Step 2: Convert to fraction form
    312,929.28/431,834.76 = 169,685.64/x
  3. Step 3: Cross multiply
    312,929.28x = 431,834.76 × 169,685.64
  4. Step 4: Simplify right side
    312,929.28x = 73,276,157,624.85
  5. Step 5: Solve for x
    x = 73,276,157,624.85/312,929.28
  6. Step 6: Final answer
    x = 234,162.04

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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.