Home / 261,445,376.71-391,801,024.90-206,616,930.31

Finding the Fourth Proportional to 261,445,376.71, 391,801,024.90 and 206,616,930.31

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Solution

The fourth proportional to 261,445,376.71, 391,801,024.90 and 206,616,930.31 is: 309,635,328.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,445,376.71 : 391,801,024.90 = 206,616,930.31 : x
  2. Step 2: Convert to fraction form
    261,445,376.71/391,801,024.90 = 206,616,930.31/x
  3. Step 3: Cross multiply
    261,445,376.71x = 391,801,024.90 × 206,616,930.31
  4. Step 4: Simplify right side
    261,445,376.71x = 80,952,725,057,149,872
  5. Step 5: Solve for x
    x = 80,952,725,057,149,872/261,445,376.71
  6. Step 6: Final answer
    x = 309,635,328.33

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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.