Home / 252,653,415.80-378,980,123.70-215,665,122.20

Finding the Fourth Proportional to 252,653,415.80, 378,980,123.70 and 215,665,122.20

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Solution

The fourth proportional to 252,653,415.80, 378,980,123.70 and 215,665,122.20 is: 323,497,683.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,653,415.80 : 378,980,123.70 = 215,665,122.20 : x
  2. Step 2: Convert to fraction form
    252,653,415.80/378,980,123.70 = 215,665,122.20/x
  3. Step 3: Cross multiply
    252,653,415.80x = 378,980,123.70 × 215,665,122.20
  4. Step 4: Simplify right side
    252,653,415.80x = 81,732,794,689,131,616
  5. Step 5: Solve for x
    x = 81,732,794,689,131,616/252,653,415.80
  6. Step 6: Final answer
    x = 323,497,683.30

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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.