Home / 279,286,299.88-385,400,849.58-153,835,795.22

Finding the Fourth Proportional to 279,286,299.88, 385,400,849.58 and 153,835,795.22

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Solution

The fourth proportional to 279,286,299.88, 385,400,849.58 and 153,835,795.22 is: 212,285,551.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,286,299.88 : 385,400,849.58 = 153,835,795.22 : x
  2. Step 2: Convert to fraction form
    279,286,299.88/385,400,849.58 = 153,835,795.22/x
  3. Step 3: Cross multiply
    279,286,299.88x = 385,400,849.58 × 153,835,795.22
  4. Step 4: Simplify right side
    279,286,299.88x = 59,288,446,171,675,896
  5. Step 5: Solve for x
    x = 59,288,446,171,675,896/279,286,299.88
  6. Step 6: Final answer
    x = 212,285,551.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.