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Finding the Fourth Proportional to 469,889.55, 648,448.20 and 255,029.61

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Solution

The fourth proportional to 469,889.55, 648,448.20 and 255,029.61 is: 351,941.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,889.55 : 648,448.20 = 255,029.61 : x
  2. Step 2: Convert to fraction form
    469,889.55/648,448.20 = 255,029.61/x
  3. Step 3: Cross multiply
    469,889.55x = 648,448.20 × 255,029.61
  4. Step 4: Simplify right side
    469,889.55x = 165,373,491,551.20
  5. Step 5: Solve for x
    x = 165,373,491,551.20/469,889.55
  6. Step 6: Final answer
    x = 351,941.20

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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.