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Finding the Fourth Proportional to 258,002.40, 386,238.15 and 191,736.30

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Solution

The fourth proportional to 258,002.40, 386,238.15 and 191,736.30 is: 287,035.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,002.40 : 386,238.15 = 191,736.30 : x
  2. Step 2: Convert to fraction form
    258,002.40/386,238.15 = 191,736.30/x
  3. Step 3: Cross multiply
    258,002.40x = 386,238.15 × 191,736.30
  4. Step 4: Simplify right side
    258,002.40x = 74,055,873,799.85
  5. Step 5: Solve for x
    x = 74,055,873,799.85/258,002.40
  6. Step 6: Final answer
    x = 287,035.60

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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.