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Finding the Fourth Proportional to 356,839.88, 535,260.72 and 120,348.68

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Solution

The fourth proportional to 356,839.88, 535,260.72 and 120,348.68 is: 180,523.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,839.88 : 535,260.72 = 120,348.68 : x
  2. Step 2: Convert to fraction form
    356,839.88/535,260.72 = 120,348.68/x
  3. Step 3: Cross multiply
    356,839.88x = 535,260.72 × 120,348.68
  4. Step 4: Simplify right side
    356,839.88x = 64,417,921,107.85
  5. Step 5: Solve for x
    x = 64,417,921,107.85/356,839.88
  6. Step 6: Final answer
    x = 180,523.32

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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.