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Finding the Fourth Proportional to 278,732.54, 384,644.45 and 162,438.59

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Solution

The fourth proportional to 278,732.54, 384,644.45 and 162,438.59 is: 224,161.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,732.54 : 384,644.45 = 162,438.59 : x
  2. Step 2: Convert to fraction form
    278,732.54/384,644.45 = 162,438.59/x
  3. Step 3: Cross multiply
    278,732.54x = 384,644.45 × 162,438.59
  4. Step 4: Simplify right side
    278,732.54x = 62,481,103,477.03
  5. Step 5: Solve for x
    x = 62,481,103,477.03/278,732.54
  6. Step 6: Final answer
    x = 224,161.50

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1.5x scale

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.