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Finding the Fourth Proportional to 279,773.50, 386,087.91 and 152,449.09

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Solution

The fourth proportional to 279,773.50, 386,087.91 and 152,449.09 is: 210,380.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,773.50 : 386,087.91 = 152,449.09 : x
  2. Step 2: Convert to fraction form
    279,773.50/386,087.91 = 152,449.09/x
  3. Step 3: Cross multiply
    279,773.50x = 386,087.91 × 152,449.09
  4. Step 4: Simplify right side
    279,773.50x = 58,858,750,539.50
  5. Step 5: Solve for x
    x = 58,858,750,539.50/279,773.50
  6. Step 6: Final answer
    x = 210,380.01

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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.