Home / 279,918,643.20-419,877,964.80-158,986,291.20

Finding the Fourth Proportional to 279,918,643.20, 419,877,964.80 and 158,986,291.20

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Solution

The fourth proportional to 279,918,643.20, 419,877,964.80 and 158,986,291.20 is: 238,479,436.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,918,643.20 : 419,877,964.80 = 158,986,291.20 : x
  2. Step 2: Convert to fraction form
    279,918,643.20/419,877,964.80 = 158,986,291.20/x
  3. Step 3: Cross multiply
    279,918,643.20x = 419,877,964.80 × 158,986,291.20
  4. Step 4: Simplify right side
    279,918,643.20x = 66,754,840,380,156,144
  5. Step 5: Solve for x
    x = 66,754,840,380,156,144/279,918,643.20
  6. Step 6: Final answer
    x = 238,479,436.80

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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.