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Finding the Fourth Proportional to 275,565.81, 380,259.78 and 154,683.74

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Solution

The fourth proportional to 275,565.81, 380,259.78 and 154,683.74 is: 213,451.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,565.81 : 380,259.78 = 154,683.74 : x
  2. Step 2: Convert to fraction form
    275,565.81/380,259.78 = 154,683.74/x
  3. Step 3: Cross multiply
    275,565.81x = 380,259.78 × 154,683.74
  4. Step 4: Simplify right side
    275,565.81x = 58,820,004,941.98
  5. Step 5: Solve for x
    x = 58,820,004,941.98/275,565.81
  6. Step 6: Final answer
    x = 213,451.75

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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.