Home / 378,239,391.16-521,947,864.74-219,457,213.48

Finding the Fourth Proportional to 378,239,391.16, 521,947,864.74 and 219,457,213.48

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Solution

The fourth proportional to 378,239,391.16, 521,947,864.74 and 219,457,213.48 is: 302,837,902.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,239,391.16 : 521,947,864.74 = 219,457,213.48 : x
  2. Step 2: Convert to fraction form
    378,239,391.16/521,947,864.74 = 219,457,213.48/x
  3. Step 3: Cross multiply
    378,239,391.16x = 521,947,864.74 × 219,457,213.48
  4. Step 4: Simplify right side
    378,239,391.16x = 114,545,223,977,676,336
  5. Step 5: Solve for x
    x = 114,545,223,977,676,336/378,239,391.16
  6. Step 6: Final answer
    x = 302,837,902.81

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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.