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Finding the Fourth Proportional to 235,409.79, 324,871.92 and 127,987.05

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Solution

The fourth proportional to 235,409.79, 324,871.92 and 127,987.05 is: 176,625.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,409.79 : 324,871.92 = 127,987.05 : x
  2. Step 2: Convert to fraction form
    235,409.79/324,871.92 = 127,987.05/x
  3. Step 3: Cross multiply
    235,409.79x = 324,871.92 × 127,987.05
  4. Step 4: Simplify right side
    235,409.79x = 41,579,398,668.64
  5. Step 5: Solve for x
    x = 41,579,398,668.64/235,409.79
  6. Step 6: Final answer
    x = 176,625.61

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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.