Home / 252,076,821.80-378,115,232.70-215,797,116.20

Finding the Fourth Proportional to 252,076,821.80, 378,115,232.70 and 215,797,116.20

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Solution

The fourth proportional to 252,076,821.80, 378,115,232.70 and 215,797,116.20 is: 323,695,674.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,076,821.80 : 378,115,232.70 = 215,797,116.20 : x
  2. Step 2: Convert to fraction form
    252,076,821.80/378,115,232.70 = 215,797,116.20/x
  3. Step 3: Cross multiply
    252,076,821.80x = 378,115,232.70 × 215,797,116.20
  4. Step 4: Simplify right side
    252,076,821.80x = 81,596,176,807,951,936
  5. Step 5: Solve for x
    x = 81,596,176,807,951,936/252,076,821.80
  6. Step 6: Final answer
    x = 323,695,674.30

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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.