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Finding the Fourth Proportional to 419,801.60, 629,702.40 and 170,662.40

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Solution

The fourth proportional to 419,801.60, 629,702.40 and 170,662.40 is: 255,993.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,801.60 : 629,702.40 = 170,662.40 : x
  2. Step 2: Convert to fraction form
    419,801.60/629,702.40 = 170,662.40/x
  3. Step 3: Cross multiply
    419,801.60x = 629,702.40 × 170,662.40
  4. Step 4: Simplify right side
    419,801.60x = 107,466,522,869.76
  5. Step 5: Solve for x
    x = 107,466,522,869.76/419,801.60
  6. Step 6: Final answer
    x = 255,993.60

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1.5x scale

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.