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Finding the Fourth Proportional to 266,165.35, 398,915.76 and 133,083.67

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Solution

The fourth proportional to 266,165.35, 398,915.76 and 133,083.67 is: 199,459.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,165.35 : 398,915.76 = 133,083.67 : x
  2. Step 2: Convert to fraction form
    266,165.35/398,915.76 = 133,083.67/x
  3. Step 3: Cross multiply
    266,165.35x = 398,915.76 × 133,083.67
  4. Step 4: Simplify right side
    266,165.35x = 53,089,172,115.13
  5. Step 5: Solve for x
    x = 53,089,172,115.13/266,165.35
  6. Step 6: Final answer
    x = 199,459.37

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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.