Home / 338,945.80-508,421.67-86,226.55

Finding the Fourth Proportional to 338,945.80, 508,421.67 and 86,226.55

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Solution

The fourth proportional to 338,945.80, 508,421.67 and 86,226.55 is: 129,340.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,945.80 : 508,421.67 = 86,226.55 : x
  2. Step 2: Convert to fraction form
    338,945.80/508,421.67 = 86,226.55/x
  3. Step 3: Cross multiply
    338,945.80x = 508,421.67 × 86,226.55
  4. Step 4: Simplify right side
    338,945.80x = 43,839,448,143.74
  5. Step 5: Solve for x
    x = 43,839,448,143.74/338,945.80
  6. Step 6: Final answer
    x = 129,340.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.