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Finding the Fourth Proportional to 258,107.20, 386,383.20 and 230,113.60

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Solution

The fourth proportional to 258,107.20, 386,383.20 and 230,113.60 is: 344,477.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,107.20 : 386,383.20 = 230,113.60 : x
  2. Step 2: Convert to fraction form
    258,107.20/386,383.20 = 230,113.60/x
  3. Step 3: Cross multiply
    258,107.20x = 386,383.20 × 230,113.60
  4. Step 4: Simplify right side
    258,107.20x = 88,912,029,131.52
  5. Step 5: Solve for x
    x = 88,912,029,131.52/258,107.20
  6. Step 6: Final answer
    x = 344,477.14

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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.