Home / 381,085,418.78-525,703,977.32-249,003,630.62

Finding the Fourth Proportional to 381,085,418.78, 525,703,977.32 and 249,003,630.62

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Solution

The fourth proportional to 381,085,418.78, 525,703,977.32 and 249,003,630.62 is: 343,498,314.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,085,418.78 : 525,703,977.32 = 249,003,630.62 : x
  2. Step 2: Convert to fraction form
    381,085,418.78/525,703,977.32 = 249,003,630.62/x
  3. Step 3: Cross multiply
    381,085,418.78x = 525,703,977.32 × 249,003,630.62
  4. Step 4: Simplify right side
    381,085,418.78x = 130,902,198,984,054,144
  5. Step 5: Solve for x
    x = 130,902,198,984,054,144/381,085,418.78
  6. Step 6: Final answer
    x = 343,498,314.38

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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.