Home / 279,938,415.90-419,907,623.85-256,129,859.10

Finding the Fourth Proportional to 279,938,415.90, 419,907,623.85 and 256,129,859.10

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Solution

The fourth proportional to 279,938,415.90, 419,907,623.85 and 256,129,859.10 is: 384,194,788.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938,415.90 : 419,907,623.85 = 256,129,859.10 : x
  2. Step 2: Convert to fraction form
    279,938,415.90/419,907,623.85 = 256,129,859.10/x
  3. Step 3: Cross multiply
    279,938,415.90x = 419,907,623.85 × 256,129,859.10
  4. Step 4: Simplify right side
    279,938,415.90x = 107,550,880,531,716,304
  5. Step 5: Solve for x
    x = 107,550,880,531,716,304/279,938,415.90
  6. Step 6: Final answer
    x = 384,194,788.65

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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.