Home / 278,480.58-417,736.90-78,784.25

Finding the Fourth Proportional to 278,480.58, 417,736.90 and 78,784.25

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Solution

The fourth proportional to 278,480.58, 417,736.90 and 78,784.25 is: 118,180.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,480.58 : 417,736.90 = 78,784.25 : x
  2. Step 2: Convert to fraction form
    278,480.58/417,736.90 = 78,784.25/x
  3. Step 3: Cross multiply
    278,480.58x = 417,736.90 × 78,784.25
  4. Step 4: Simplify right side
    278,480.58x = 32,911,085,930.46
  5. Step 5: Solve for x
    x = 32,911,085,930.46/278,480.58
  6. Step 6: Final answer
    x = 118,180.90

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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.