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Finding the Fourth Proportional to 266,165.37, 398,915.80 and 133,083.69

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Solution

The fourth proportional to 266,165.37, 398,915.80 and 133,083.69 is: 199,459.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,165.37 : 398,915.80 = 133,083.69 : x
  2. Step 2: Convert to fraction form
    266,165.37/398,915.80 = 133,083.69/x
  3. Step 3: Cross multiply
    266,165.37x = 398,915.80 × 133,083.69
  4. Step 4: Simplify right side
    266,165.37x = 53,089,186,663.30
  5. Step 5: Solve for x
    x = 53,089,186,663.30/266,165.37
  6. Step 6: Final answer
    x = 199,459.41

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1.5x scale

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.