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Finding the Fourth Proportional to 403,866,902.80, 605,800,354.20 and 250,685,923.60

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Solution

The fourth proportional to 403,866,902.80, 605,800,354.20 and 250,685,923.60 is: 376,028,885.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,866,902.80 : 605,800,354.20 = 250,685,923.60 : x
  2. Step 2: Convert to fraction form
    403,866,902.80/605,800,354.20 = 250,685,923.60/x
  3. Step 3: Cross multiply
    403,866,902.80x = 605,800,354.20 × 250,685,923.60
  4. Step 4: Simplify right side
    403,866,902.80x = 151,865,621,309,834,144
  5. Step 5: Solve for x
    x = 151,865,621,309,834,144/403,866,902.80
  6. Step 6: Final answer
    x = 376,028,885.40

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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.