Home / 256,904,957.36-354,531,393.28-139,431,331.28

Finding the Fourth Proportional to 256,904,957.36, 354,531,393.28 and 139,431,331.28

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Solution

The fourth proportional to 256,904,957.36, 354,531,393.28 and 139,431,331.28 is: 192,416,622.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,904,957.36 : 354,531,393.28 = 139,431,331.28 : x
  2. Step 2: Convert to fraction form
    256,904,957.36/354,531,393.28 = 139,431,331.28/x
  3. Step 3: Cross multiply
    256,904,957.36x = 354,531,393.28 × 139,431,331.28
  4. Step 4: Simplify right side
    256,904,957.36x = 49,432,784,145,583,640
  5. Step 5: Solve for x
    x = 49,432,784,145,583,640/256,904,957.36
  6. Step 6: Final answer
    x = 192,416,622.29

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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.