Home / 312,318.28-431,000.60-169,078.32

Finding the Fourth Proportional to 312,318.28, 431,000.60 and 169,078.32

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Solution

The fourth proportional to 312,318.28, 431,000.60 and 169,078.32 is: 233,328.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,318.28 : 431,000.60 = 169,078.32 : x
  2. Step 2: Convert to fraction form
    312,318.28/431,000.60 = 169,078.32/x
  3. Step 3: Cross multiply
    312,318.28x = 431,000.60 × 169,078.32
  4. Step 4: Simplify right side
    312,318.28x = 72,872,857,366.99
  5. Step 5: Solve for x
    x = 72,872,857,366.99/312,318.28
  6. Step 6: Final answer
    x = 233,328.83

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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.