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Finding the Fourth Proportional to 221,903.69, 306,152.30 and 126,342.72

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Solution

The fourth proportional to 221,903.69, 306,152.30 and 126,342.72 is: 174,310.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,903.69 : 306,152.30 = 126,342.72 : x
  2. Step 2: Convert to fraction form
    221,903.69/306,152.30 = 126,342.72/x
  3. Step 3: Cross multiply
    221,903.69x = 306,152.30 × 126,342.72
  4. Step 4: Simplify right side
    221,903.69x = 38,680,114,316.26
  5. Step 5: Solve for x
    x = 38,680,114,316.26/221,903.69
  6. Step 6: Final answer
    x = 174,310.37

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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.