Home / 391,819.08-540,554.94-255,809.64

Finding the Fourth Proportional to 391,819.08, 540,554.94 and 255,809.64

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Solution

The fourth proportional to 391,819.08, 540,554.94 and 255,809.64 is: 352,915.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,819.08 : 540,554.94 = 255,809.64 : x
  2. Step 2: Convert to fraction form
    391,819.08/540,554.94 = 255,809.64/x
  3. Step 3: Cross multiply
    391,819.08x = 540,554.94 × 255,809.64
  4. Step 4: Simplify right side
    391,819.08x = 138,279,164,601.62
  5. Step 5: Solve for x
    x = 138,279,164,601.62/391,819.08
  6. Step 6: Final answer
    x = 352,915.85

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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.