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Finding the Fourth Proportional to 540,105.80, 745,361.04 and 298,403.96

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Solution

The fourth proportional to 540,105.80, 745,361.04 and 298,403.96 is: 411,805.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,105.80 : 745,361.04 = 298,403.96 : x
  2. Step 2: Convert to fraction form
    540,105.80/745,361.04 = 298,403.96/x
  3. Step 3: Cross multiply
    540,105.80x = 745,361.04 × 298,403.96
  4. Step 4: Simplify right side
    540,105.80x = 222,418,685,965.72
  5. Step 5: Solve for x
    x = 222,418,685,965.72/540,105.80
  6. Step 6: Final answer
    x = 411,805.77

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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.