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Finding the Fourth Proportional to 266,266.20, 398,743.20 and 177,036.60

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Solution

The fourth proportional to 266,266.20, 398,743.20 and 177,036.60 is: 265,118.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,266.20 : 398,743.20 = 177,036.60 : x
  2. Step 2: Convert to fraction form
    266,266.20/398,743.20 = 177,036.60/x
  3. Step 3: Cross multiply
    266,266.20x = 398,743.20 × 177,036.60
  4. Step 4: Simplify right side
    266,266.20x = 70,592,140,401.12
  5. Step 5: Solve for x
    x = 70,592,140,401.12/266,266.20
  6. Step 6: Final answer
    x = 265,118.67

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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.