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Finding the Fourth Proportional to 221,773.70, 306,050.66 and 126,280.78

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Solution

The fourth proportional to 221,773.70, 306,050.66 and 126,280.78 is: 174,269.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,773.70 : 306,050.66 = 126,280.78 : x
  2. Step 2: Convert to fraction form
    221,773.70/306,050.66 = 126,280.78/x
  3. Step 3: Cross multiply
    221,773.70x = 306,050.66 × 126,280.78
  4. Step 4: Simplify right side
    221,773.70x = 38,648,316,064.31
  5. Step 5: Solve for x
    x = 38,648,316,064.31/221,773.70
  6. Step 6: Final answer
    x = 174,269.16

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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.