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Finding the Fourth Proportional to 223,774.92, 308,850.84 and 128,282.40

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Solution

The fourth proportional to 223,774.92, 308,850.84 and 128,282.40 is: 177,053.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,774.92 : 308,850.84 = 128,282.40 : x
  2. Step 2: Convert to fraction form
    223,774.92/308,850.84 = 128,282.40/x
  3. Step 3: Cross multiply
    223,774.92x = 308,850.84 × 128,282.40
  4. Step 4: Simplify right side
    223,774.92x = 39,620,126,997.22
  5. Step 5: Solve for x
    x = 39,620,126,997.22/223,774.92
  6. Step 6: Final answer
    x = 177,053.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.