Home / 338,945.20-508,415.58-86,223.53

Finding the Fourth Proportional to 338,945.20, 508,415.58 and 86,223.53

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Solution

The fourth proportional to 338,945.20, 508,415.58 and 86,223.53 is: 129,334.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,945.20 : 508,415.58 = 86,223.53 : x
  2. Step 2: Convert to fraction form
    338,945.20/508,415.58 = 86,223.53/x
  3. Step 3: Cross multiply
    338,945.20x = 508,415.58 × 86,223.53
  4. Step 4: Simplify right side
    338,945.20x = 43,837,387,285.64
  5. Step 5: Solve for x
    x = 43,837,387,285.64/338,945.20
  6. Step 6: Final answer
    x = 129,334.73

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1.5x scale

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.