Home / 279,938,455.40-419,907,683.10-221,487,818.60

Finding the Fourth Proportional to 279,938,455.40, 419,907,683.10 and 221,487,818.60

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Solution

The fourth proportional to 279,938,455.40, 419,907,683.10 and 221,487,818.60 is: 332,231,727.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938,455.40 : 419,907,683.10 = 221,487,818.60 : x
  2. Step 2: Convert to fraction form
    279,938,455.40/419,907,683.10 = 221,487,818.60/x
  3. Step 3: Cross multiply
    279,938,455.40x = 419,907,683.10 × 221,487,818.60
  4. Step 4: Simplify right side
    279,938,455.40x = 93,004,436,743,199,088
  5. Step 5: Solve for x
    x = 93,004,436,743,199,088/279,938,455.40
  6. Step 6: Final answer
    x = 332,231,727.90

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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.