Home / 419,311.20-629,043.60-170,018.40

Finding the Fourth Proportional to 419,311.20, 629,043.60 and 170,018.40

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Solution

The fourth proportional to 419,311.20, 629,043.60 and 170,018.40 is: 255,058.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,311.20 : 629,043.60 = 170,018.40 : x
  2. Step 2: Convert to fraction form
    419,311.20/629,043.60 = 170,018.40/x
  3. Step 3: Cross multiply
    419,311.20x = 629,043.60 × 170,018.40
  4. Step 4: Simplify right side
    419,311.20x = 106,948,986,402.24
  5. Step 5: Solve for x
    x = 106,948,986,402.24/419,311.20
  6. Step 6: Final answer
    x = 255,058.74

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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.