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Finding the Fourth Proportional to 408,516.66, 563,522.94 and 245,130.90

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Solution

The fourth proportional to 408,516.66, 563,522.94 and 245,130.90 is: 338,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,516.66 : 563,522.94 = 245,130.90 : x
  2. Step 2: Convert to fraction form
    408,516.66/563,522.94 = 245,130.90/x
  3. Step 3: Cross multiply
    408,516.66x = 563,522.94 × 245,130.90
  4. Step 4: Simplify right side
    408,516.66x = 138,136,885,452.85
  5. Step 5: Solve for x
    x = 138,136,885,452.85/408,516.66
  6. Step 6: Final answer
    x = 338,142.60

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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.