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Finding the Fourth Proportional to 408,672.22, 563,980.99 and 255,661.50

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Solution

The fourth proportional to 408,672.22, 563,980.99 and 255,661.50 is: 352,821.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,672.22 : 563,980.99 = 255,661.50 : x
  2. Step 2: Convert to fraction form
    408,672.22/563,980.99 = 255,661.50/x
  3. Step 3: Cross multiply
    408,672.22x = 563,980.99 × 255,661.50
  4. Step 4: Simplify right side
    408,672.22x = 144,188,225,874.89
  5. Step 5: Solve for x
    x = 144,188,225,874.89/408,672.22
  6. Step 6: Final answer
    x = 352,821.21

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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.