Home / 256,904,940.36-354,531,369.78-139,431,314.28

Finding the Fourth Proportional to 256,904,940.36, 354,531,369.78 and 139,431,314.28

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Solution

The fourth proportional to 256,904,940.36, 354,531,369.78 and 139,431,314.28 is: 192,416,598.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,904,940.36 : 354,531,369.78 = 139,431,314.28 : x
  2. Step 2: Convert to fraction form
    256,904,940.36/354,531,369.78 = 139,431,314.28/x
  3. Step 3: Cross multiply
    256,904,940.36x = 354,531,369.78 × 139,431,314.28
  4. Step 4: Simplify right side
    256,904,940.36x = 49,432,774,841,914,072
  5. Step 5: Solve for x
    x = 49,432,774,841,914,072/256,904,940.36
  6. Step 6: Final answer
    x = 192,416,598.81

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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.