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Finding the Fourth Proportional to 348,890.40, 522,644.40 and 324,007.20

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Solution

The fourth proportional to 348,890.40, 522,644.40 and 324,007.20 is: 485,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,890.40 : 522,644.40 = 324,007.20 : x
  2. Step 2: Convert to fraction form
    348,890.40/522,644.40 = 324,007.20/x
  3. Step 3: Cross multiply
    348,890.40x = 522,644.40 × 324,007.20
  4. Step 4: Simplify right side
    348,890.40x = 169,340,548,639.68
  5. Step 5: Solve for x
    x = 169,340,548,639.68/348,890.40
  6. Step 6: Final answer
    x = 485,368.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.