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Finding the Fourth Proportional to 229,323.70, 343,985.55 and 220,138.30

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Solution

The fourth proportional to 229,323.70, 343,985.55 and 220,138.30 is: 330,207.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,323.70 : 343,985.55 = 220,138.30 : x
  2. Step 2: Convert to fraction form
    229,323.70/343,985.55 = 220,138.30/x
  3. Step 3: Cross multiply
    229,323.70x = 343,985.55 × 220,138.30
  4. Step 4: Simplify right side
    229,323.70x = 75,724,394,201.57
  5. Step 5: Solve for x
    x = 75,724,394,201.57/229,323.70
  6. Step 6: Final answer
    x = 330,207.45

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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.