Home / 278,124.39-383,825.73-155,630.52

Finding the Fourth Proportional to 278,124.39, 383,825.73 and 155,630.52

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Solution

The fourth proportional to 278,124.39, 383,825.73 and 155,630.52 is: 214,777.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,124.39 : 383,825.73 = 155,630.52 : x
  2. Step 2: Convert to fraction form
    278,124.39/383,825.73 = 155,630.52/x
  3. Step 3: Cross multiply
    278,124.39x = 383,825.73 × 155,630.52
  4. Step 4: Simplify right side
    278,124.39x = 59,734,997,949.28
  5. Step 5: Solve for x
    x = 59,734,997,949.28/278,124.39
  6. Step 6: Final answer
    x = 214,777.99

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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.