Home / 391,546.49-540,172.77-238,528.85

Finding the Fourth Proportional to 391,546.49, 540,172.77 and 238,528.85

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Solution

The fourth proportional to 391,546.49, 540,172.77 and 238,528.85 is: 329,071.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,546.49 : 540,172.77 = 238,528.85 : x
  2. Step 2: Convert to fraction form
    391,546.49/540,172.77 = 238,528.85/x
  3. Step 3: Cross multiply
    391,546.49x = 540,172.77 × 238,528.85
  4. Step 4: Simplify right side
    391,546.49x = 128,846,789,629.42
  5. Step 5: Solve for x
    x = 128,846,789,629.42/391,546.49
  6. Step 6: Final answer
    x = 329,071.50

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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.