Home / 258,946,915.31-357,346,886.49-139,869,506.97

Finding the Fourth Proportional to 258,946,915.31, 357,346,886.49 and 139,869,506.97

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Solution

The fourth proportional to 258,946,915.31, 357,346,886.49 and 139,869,506.97 is: 193,019,997.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,946,915.31 : 357,346,886.49 = 139,869,506.97 : x
  2. Step 2: Convert to fraction form
    258,946,915.31/357,346,886.49 = 139,869,506.97/x
  3. Step 3: Cross multiply
    258,946,915.31x = 357,346,886.49 × 139,869,506.97
  4. Step 4: Simplify right side
    258,946,915.31x = 49,981,932,832,720,504
  5. Step 5: Solve for x
    x = 49,981,932,832,720,504/258,946,915.31
  6. Step 6: Final answer
    x = 193,019,997.07

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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.