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Finding the Fourth Proportional to 315,187.33, 434,956.49 and 179,221.31

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Solution

The fourth proportional to 315,187.33, 434,956.49 and 179,221.31 is: 247,324.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,187.33 : 434,956.49 = 179,221.31 : x
  2. Step 2: Convert to fraction form
    315,187.33/434,956.49 = 179,221.31/x
  3. Step 3: Cross multiply
    315,187.33x = 434,956.49 × 179,221.31
  4. Step 4: Simplify right side
    315,187.33x = 77,953,468,859.91
  5. Step 5: Solve for x
    x = 77,953,468,859.91/315,187.33
  6. Step 6: Final answer
    x = 247,324.25

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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.