Home / 378,042,096-521,695,003.68-210,776,370.24

Finding the Fourth Proportional to 378,042,096, 521,695,003.68 and 210,776,370.24

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Solution

The fourth proportional to 378,042,096, 521,695,003.68 and 210,776,370.24 is: 290,869,668.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,042,096 : 521,695,003.68 = 210,776,370.24 : x
  2. Step 2: Convert to fraction form
    378,042,096/521,695,003.68 = 210,776,370.24/x
  3. Step 3: Cross multiply
    378,042,096x = 521,695,003.68 × 210,776,370.24
  4. Step 4: Simplify right side
    378,042,096x = 109,960,979,248,013,856
  5. Step 5: Solve for x
    x = 109,960,979,248,013,856/378,042,096
  6. Step 6: Final answer
    x = 290,869,668.78

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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.