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Finding the Fourth Proportional to 345,486.60, 518,195.88 and 120,805.56

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Solution

The fourth proportional to 345,486.60, 518,195.88 and 120,805.56 is: 181,196.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,486.60 : 518,195.88 = 120,805.56 : x
  2. Step 2: Convert to fraction form
    345,486.60/518,195.88 = 120,805.56/x
  3. Step 3: Cross multiply
    345,486.60x = 518,195.88 × 120,805.56
  4. Step 4: Simplify right side
    345,486.60x = 62,600,943,473.09
  5. Step 5: Solve for x
    x = 62,600,943,473.09/345,486.60
  6. Step 6: Final answer
    x = 181,196.44

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1.5x scale

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.