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Finding the Fourth Proportional to 279,813,722.40, 419,720,583.60 and 250,336,461.60

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Solution

The fourth proportional to 279,813,722.40, 419,720,583.60 and 250,336,461.60 is: 375,504,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,813,722.40 : 419,720,583.60 = 250,336,461.60 : x
  2. Step 2: Convert to fraction form
    279,813,722.40/419,720,583.60 = 250,336,461.60/x
  3. Step 3: Cross multiply
    279,813,722.40x = 419,720,583.60 × 250,336,461.60
  4. Step 4: Simplify right side
    279,813,722.40x = 105,071,365,759,110,992
  5. Step 5: Solve for x
    x = 105,071,365,759,110,992/279,813,722.40
  6. Step 6: Final answer
    x = 375,504,692.40

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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.