Home / 279,938,316.40-419,907,474.60-221,487,679.60

Finding the Fourth Proportional to 279,938,316.40, 419,907,474.60 and 221,487,679.60

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Solution

The fourth proportional to 279,938,316.40, 419,907,474.60 and 221,487,679.60 is: 332,231,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938,316.40 : 419,907,474.60 = 221,487,679.60 : x
  2. Step 2: Convert to fraction form
    279,938,316.40/419,907,474.60 = 221,487,679.60/x
  3. Step 3: Cross multiply
    279,938,316.40x = 419,907,474.60 × 221,487,679.60
  4. Step 4: Simplify right side
    279,938,316.40x = 93,004,332,195,849,936
  5. Step 5: Solve for x
    x = 93,004,332,195,849,936/279,938,316.40
  6. Step 6: Final answer
    x = 332,231,519.40

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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.