Home / 419,921.60-629,882.40-170,782.40

Finding the Fourth Proportional to 419,921.60, 629,882.40 and 170,782.40

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Solution

The fourth proportional to 419,921.60, 629,882.40 and 170,782.40 is: 256,173.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,921.60 : 629,882.40 = 170,782.40 : x
  2. Step 2: Convert to fraction form
    419,921.60/629,882.40 = 170,782.40/x
  3. Step 3: Cross multiply
    419,921.60x = 629,882.40 × 170,782.40
  4. Step 4: Simplify right side
    419,921.60x = 107,572,827,989.76
  5. Step 5: Solve for x
    x = 107,572,827,989.76/419,921.60
  6. Step 6: Final answer
    x = 256,173.60

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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.