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Finding the Fourth Proportional to 469,884.79, 648,424.54 and 255,020.55

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Solution

The fourth proportional to 469,884.79, 648,424.54 and 255,020.55 is: 351,919.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,884.79 : 648,424.54 = 255,020.55 : x
  2. Step 2: Convert to fraction form
    469,884.79/648,424.54 = 255,020.55/x
  3. Step 3: Cross multiply
    469,884.79x = 648,424.54 × 255,020.55
  4. Step 4: Simplify right side
    469,884.79x = 165,361,582,824.30
  5. Step 5: Solve for x
    x = 165,361,582,824.30/469,884.79
  6. Step 6: Final answer
    x = 351,919.42

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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.