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Finding the Fourth Proportional to 352,386.80, 486,294.12 and 191,241.88

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Solution

The fourth proportional to 352,386.80, 486,294.12 and 191,241.88 is: 263,913.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,386.80 : 486,294.12 = 191,241.88 : x
  2. Step 2: Convert to fraction form
    352,386.80/486,294.12 = 191,241.88/x
  3. Step 3: Cross multiply
    352,386.80x = 486,294.12 × 191,241.88
  4. Step 4: Simplify right side
    352,386.80x = 92,999,801,741.75
  5. Step 5: Solve for x
    x = 92,999,801,741.75/352,386.80
  6. Step 6: Final answer
    x = 263,913.98

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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.