Home / 315,845.52-435,867.96-172,607.76

Finding the Fourth Proportional to 315,845.52, 435,867.96 and 172,607.76

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Solution

The fourth proportional to 315,845.52, 435,867.96 and 172,607.76 is: 238,199.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,845.52 : 435,867.96 = 172,607.76 : x
  2. Step 2: Convert to fraction form
    315,845.52/435,867.96 = 172,607.76/x
  3. Step 3: Cross multiply
    315,845.52x = 435,867.96 × 172,607.76
  4. Step 4: Simplify right side
    315,845.52x = 75,234,192,231.37
  5. Step 5: Solve for x
    x = 75,234,192,231.37/315,845.52
  6. Step 6: Final answer
    x = 238,199.33

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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.