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Finding the Fourth Proportional to 443,868.80, 665,970.80 and 266,499.45

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Solution

The fourth proportional to 443,868.80, 665,970.80 and 266,499.45 is: 399,849.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,868.80 : 665,970.80 = 266,499.45 : x
  2. Step 2: Convert to fraction form
    443,868.80/665,970.80 = 266,499.45/x
  3. Step 3: Cross multiply
    443,868.80x = 665,970.80 × 266,499.45
  4. Step 4: Simplify right side
    443,868.80x = 177,480,850,583.56
  5. Step 5: Solve for x
    x = 177,480,850,583.56/443,868.80
  6. Step 6: Final answer
    x = 399,849.80

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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.