Home / 309,338,663.85-426,895,446.72-168,218,137.85

Finding the Fourth Proportional to 309,338,663.85, 426,895,446.72 and 168,218,137.85

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Solution

The fourth proportional to 309,338,663.85, 426,895,446.72 and 168,218,137.85 is: 232,145,429.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,338,663.85 : 426,895,446.72 = 168,218,137.85 : x
  2. Step 2: Convert to fraction form
    309,338,663.85/426,895,446.72 = 168,218,137.85/x
  3. Step 3: Cross multiply
    309,338,663.85x = 426,895,446.72 × 168,218,137.85
  4. Step 4: Simplify right side
    309,338,663.85x = 71,811,557,101,747,816
  5. Step 5: Solve for x
    x = 71,811,557,101,747,816/309,338,663.85
  6. Step 6: Final answer
    x = 232,145,429.89

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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.