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Finding the Fourth Proportional to 220,200.15, 308,980.05 and 220,200.15

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Solution

The fourth proportional to 220,200.15, 308,980.05 and 220,200.15 is: 308,980.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,200.15 : 308,980.05 = 220,200.15 : x
  2. Step 2: Convert to fraction form
    220,200.15/308,980.05 = 220,200.15/x
  3. Step 3: Cross multiply
    220,200.15x = 308,980.05 × 220,200.15
  4. Step 4: Simplify right side
    220,200.15x = 68,037,453,357.01
  5. Step 5: Solve for x
    x = 68,037,453,357.01/220,200.15
  6. Step 6: Final answer
    x = 308,980.05

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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.