Home / 391,223.07-539,858.09-238,244.31

Finding the Fourth Proportional to 391,223.07, 539,858.09 and 238,244.31

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Solution

The fourth proportional to 391,223.07, 539,858.09 and 238,244.31 is: 328,759.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,223.07 : 539,858.09 = 238,244.31 : x
  2. Step 2: Convert to fraction form
    391,223.07/539,858.09 = 238,244.31/x
  3. Step 3: Cross multiply
    391,223.07x = 539,858.09 × 238,244.31
  4. Step 4: Simplify right side
    391,223.07x = 128,618,116,958.75
  5. Step 5: Solve for x
    x = 128,618,116,958.75/391,223.07
  6. Step 6: Final answer
    x = 328,759.03

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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.