Home / 391,929.22-540,977.43-255,983.95

Finding the Fourth Proportional to 391,929.22, 540,977.43 and 255,983.95

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Solution

The fourth proportional to 391,929.22, 540,977.43 and 255,983.95 is: 353,333.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,929.22 : 540,977.43 = 255,983.95 : x
  2. Step 2: Convert to fraction form
    391,929.22/540,977.43 = 255,983.95/x
  3. Step 3: Cross multiply
    391,929.22x = 540,977.43 × 255,983.95
  4. Step 4: Simplify right side
    391,929.22x = 138,481,539,392.25
  5. Step 5: Solve for x
    x = 138,481,539,392.25/391,929.22
  6. Step 6: Final answer
    x = 353,333.03

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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.