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Finding the Fourth Proportional to 398,915.02, 550,490.09 and 226,851.68

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Solution

The fourth proportional to 398,915.02, 550,490.09 and 226,851.68 is: 313,048.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,915.02 : 550,490.09 = 226,851.68 : x
  2. Step 2: Convert to fraction form
    398,915.02/550,490.09 = 226,851.68/x
  3. Step 3: Cross multiply
    398,915.02x = 550,490.09 × 226,851.68
  4. Step 4: Simplify right side
    398,915.02x = 124,879,603,683.21
  5. Step 5: Solve for x
    x = 124,879,603,683.21/398,915.02
  6. Step 6: Final answer
    x = 313,048.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.