Home / 236,816.72-326,811.78-129,393.42

Finding the Fourth Proportional to 236,816.72, 326,811.78 and 129,393.42

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Solution

The fourth proportional to 236,816.72, 326,811.78 and 129,393.42 is: 178,565.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,816.72 : 326,811.78 = 129,393.42 : x
  2. Step 2: Convert to fraction form
    236,816.72/326,811.78 = 129,393.42/x
  3. Step 3: Cross multiply
    236,816.72x = 326,811.78 × 129,393.42
  4. Step 4: Simplify right side
    236,816.72x = 42,287,293,910.49
  5. Step 5: Solve for x
    x = 42,287,293,910.49/236,816.72
  6. Step 6: Final answer
    x = 178,565.49

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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.