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Finding the Fourth Proportional to 209,374.59, 288,910.76 and 141,539.12

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Solution

The fourth proportional to 209,374.59, 288,910.76 and 141,539.12 is: 195,306.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,374.59 : 288,910.76 = 141,539.12 : x
  2. Step 2: Convert to fraction form
    209,374.59/288,910.76 = 141,539.12/x
  3. Step 3: Cross multiply
    209,374.59x = 288,910.76 × 141,539.12
  4. Step 4: Simplify right side
    209,374.59x = 40,892,172,576.68
  5. Step 5: Solve for x
    x = 40,892,172,576.68/209,374.59
  6. Step 6: Final answer
    x = 195,306.28

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1.5x scale

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.