Home / 422,934,816.25-634,401,352.30-238,618,621.80

Finding the Fourth Proportional to 422,934,816.25, 634,401,352.30 and 238,618,621.80

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Solution

The fourth proportional to 422,934,816.25, 634,401,352.30 and 238,618,621.80 is: 357,927,440.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,934,816.25 : 634,401,352.30 = 238,618,621.80 : x
  2. Step 2: Convert to fraction form
    422,934,816.25/634,401,352.30 = 238,618,621.80/x
  3. Step 3: Cross multiply
    422,934,816.25x = 634,401,352.30 × 238,618,621.80
  4. Step 4: Simplify right side
    422,934,816.25x = 151,379,976,354,013,792
  5. Step 5: Solve for x
    x = 151,379,976,354,013,792/422,934,816.25
  6. Step 6: Final answer
    x = 357,927,440.68

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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.