Home / 210,571,915.92-290,491,338.72-136,256,472.48

Finding the Fourth Proportional to 210,571,915.92, 290,491,338.72 and 136,256,472.48

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Solution

The fourth proportional to 210,571,915.92, 290,491,338.72 and 136,256,472.48 is: 187,970,579.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,571,915.92 : 290,491,338.72 = 136,256,472.48 : x
  2. Step 2: Convert to fraction form
    210,571,915.92/290,491,338.72 = 136,256,472.48/x
  3. Step 3: Cross multiply
    210,571,915.92x = 290,491,338.72 × 136,256,472.48
  4. Step 4: Simplify right side
    210,571,915.92x = 39,581,325,099,980,040
  5. Step 5: Solve for x
    x = 39,581,325,099,980,040/210,571,915.92
  6. Step 6: Final answer
    x = 187,970,579.68

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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.