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Finding the Fourth Proportional to 412,641.66, 618,962.50 and 272,367.48

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Solution

The fourth proportional to 412,641.66, 618,962.50 and 272,367.48 is: 408,551.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,641.66 : 618,962.50 = 272,367.48 : x
  2. Step 2: Convert to fraction form
    412,641.66/618,962.50 = 272,367.48/x
  3. Step 3: Cross multiply
    412,641.66x = 618,962.50 × 272,367.48
  4. Step 4: Simplify right side
    412,641.66x = 168,585,256,339.50
  5. Step 5: Solve for x
    x = 168,585,256,339.50/412,641.66
  6. Step 6: Final answer
    x = 408,551.23

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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.