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Finding the Fourth Proportional to 443,477.10, 665,380.86 and 266,111.40

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Solution

The fourth proportional to 443,477.10, 665,380.86 and 266,111.40 is: 399,266.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,477.10 : 665,380.86 = 266,111.40 : x
  2. Step 2: Convert to fraction form
    443,477.10/665,380.86 = 266,111.40/x
  3. Step 3: Cross multiply
    443,477.10x = 665,380.86 × 266,111.40
  4. Step 4: Simplify right side
    443,477.10x = 177,065,432,187.80
  5. Step 5: Solve for x
    x = 177,065,432,187.80/443,477.10
  6. Step 6: Final answer
    x = 399,266.24

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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.