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Finding the Fourth Proportional to 266,688.80, 399,903.60 and 148,234.40

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Solution

The fourth proportional to 266,688.80, 399,903.60 and 148,234.40 is: 222,279.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,688.80 : 399,903.60 = 148,234.40 : x
  2. Step 2: Convert to fraction form
    266,688.80/399,903.60 = 148,234.40/x
  3. Step 3: Cross multiply
    266,688.80x = 399,903.60 × 148,234.40
  4. Step 4: Simplify right side
    266,688.80x = 59,279,470,203.84
  5. Step 5: Solve for x
    x = 59,279,470,203.84/266,688.80
  6. Step 6: Final answer
    x = 222,279.56

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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.