Home / 279,939,764.90-419,909,647.35-221,489,128.10

Finding the Fourth Proportional to 279,939,764.90, 419,909,647.35 and 221,489,128.10

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Solution

The fourth proportional to 279,939,764.90, 419,909,647.35 and 221,489,128.10 is: 332,233,692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,939,764.90 : 419,909,647.35 = 221,489,128.10 : x
  2. Step 2: Convert to fraction form
    279,939,764.90/419,909,647.35 = 221,489,128.10/x
  3. Step 3: Cross multiply
    279,939,764.90x = 419,909,647.35 × 221,489,128.10
  4. Step 4: Simplify right side
    279,939,764.90x = 93,005,421,672,329,984
  5. Step 5: Solve for x
    x = 93,005,421,672,329,984/279,939,764.90
  6. Step 6: Final answer
    x = 332,233,692.15

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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.