Home / 354,421.20-531,734.20-105,109.20

Finding the Fourth Proportional to 354,421.20, 531,734.20 and 105,109.20

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Solution

The fourth proportional to 354,421.20, 531,734.20 and 105,109.20 is: 157,694.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,421.20 : 531,734.20 = 105,109.20 : x
  2. Step 2: Convert to fraction form
    354,421.20/531,734.20 = 105,109.20/x
  3. Step 3: Cross multiply
    354,421.20x = 531,734.20 × 105,109.20
  4. Step 4: Simplify right side
    354,421.20x = 55,890,156,374.64
  5. Step 5: Solve for x
    x = 55,890,156,374.64/354,421.20
  6. Step 6: Final answer
    x = 157,694.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.