Home / 236,780.40-326,761.78-129,357.38

Finding the Fourth Proportional to 236,780.40, 326,761.78 and 129,357.38

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Solution

The fourth proportional to 236,780.40, 326,761.78 and 129,357.38 is: 178,515.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,780.40 : 326,761.78 = 129,357.38 : x
  2. Step 2: Convert to fraction form
    236,780.40/326,761.78 = 129,357.38/x
  3. Step 3: Cross multiply
    236,780.40x = 326,761.78 × 129,357.38
  4. Step 4: Simplify right side
    236,780.40x = 42,269,047,744.94
  5. Step 5: Solve for x
    x = 42,269,047,744.94/236,780.40
  6. Step 6: Final answer
    x = 178,515.82

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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.