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Finding the Fourth Proportional to 547,232.40, 820,411.20 and 231,429.60

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Solution

The fourth proportional to 547,232.40, 820,411.20 and 231,429.60 is: 346,959.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,232.40 : 820,411.20 = 231,429.60 : x
  2. Step 2: Convert to fraction form
    547,232.40/820,411.20 = 231,429.60/x
  3. Step 3: Cross multiply
    547,232.40x = 820,411.20 × 231,429.60
  4. Step 4: Simplify right side
    547,232.40x = 189,867,435,851.52
  5. Step 5: Solve for x
    x = 189,867,435,851.52/547,232.40
  6. Step 6: Final answer
    x = 346,959.42

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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.