Home / 419,725.20-629,664.60-170,432.40

Finding the Fourth Proportional to 419,725.20, 629,664.60 and 170,432.40

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Solution

The fourth proportional to 419,725.20, 629,664.60 and 170,432.40 is: 255,679.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,725.20 : 629,664.60 = 170,432.40 : x
  2. Step 2: Convert to fraction form
    419,725.20/629,664.60 = 170,432.40/x
  3. Step 3: Cross multiply
    419,725.20x = 629,664.60 × 170,432.40
  4. Step 4: Simplify right side
    419,725.20x = 107,315,248,973.04
  5. Step 5: Solve for x
    x = 107,315,248,973.04/419,725.20
  6. Step 6: Final answer
    x = 255,679.79

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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.