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Finding the Fourth Proportional to 548,007.68, 756,255.84 and 321,656.96

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Solution

The fourth proportional to 548,007.68, 756,255.84 and 321,656.96 is: 443,889.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,007.68 : 756,255.84 = 321,656.96 : x
  2. Step 2: Convert to fraction form
    548,007.68/756,255.84 = 321,656.96/x
  3. Step 3: Cross multiply
    548,007.68x = 756,255.84 × 321,656.96
  4. Step 4: Simplify right side
    548,007.68x = 243,254,954,476.65
  5. Step 5: Solve for x
    x = 243,254,954,476.65/548,007.68
  6. Step 6: Final answer
    x = 443,889.68

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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.