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Finding the Fourth Proportional to 443,442.57, 665,329.10 and 266,076.87

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Solution

The fourth proportional to 443,442.57, 665,329.10 and 266,076.87 is: 399,214.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,442.57 : 665,329.10 = 266,076.87 : x
  2. Step 2: Convert to fraction form
    443,442.57/665,329.10 = 266,076.87/x
  3. Step 3: Cross multiply
    443,442.57x = 665,329.10 × 266,076.87
  4. Step 4: Simplify right side
    443,442.57x = 177,028,683,117.53
  5. Step 5: Solve for x
    x = 177,028,683,117.53/443,442.57
  6. Step 6: Final answer
    x = 399,214.45

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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.