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Finding the Fourth Proportional to 522,866.40, 721,496.40 and 293,393.68

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Solution

The fourth proportional to 522,866.40, 721,496.40 and 293,393.68 is: 404,850.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,866.40 : 721,496.40 = 293,393.68 : x
  2. Step 2: Convert to fraction form
    522,866.40/721,496.40 = 293,393.68/x
  3. Step 3: Cross multiply
    522,866.40x = 721,496.40 × 293,393.68
  4. Step 4: Simplify right side
    522,866.40x = 211,682,483,902.75
  5. Step 5: Solve for x
    x = 211,682,483,902.75/522,866.40
  6. Step 6: Final answer
    x = 404,850.04

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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.