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Finding the Fourth Proportional to 220,212.70, 308,712.50 and 220,212.70

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Solution

The fourth proportional to 220,212.70, 308,712.50 and 220,212.70 is: 308,712.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,212.70 : 308,712.50 = 220,212.70 : x
  2. Step 2: Convert to fraction form
    220,212.70/308,712.50 = 220,212.70/x
  3. Step 3: Cross multiply
    220,212.70x = 308,712.50 × 220,212.70
  4. Step 4: Simplify right side
    220,212.70x = 67,982,413,148.75
  5. Step 5: Solve for x
    x = 67,982,413,148.75/220,212.70
  6. Step 6: Final answer
    x = 308,712.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.