Home / 278,640.75-384,520.83-151,317.24

Finding the Fourth Proportional to 278,640.75, 384,520.83 and 151,317.24

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Solution

The fourth proportional to 278,640.75, 384,520.83 and 151,317.24 is: 208,815.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,640.75 : 384,520.83 = 151,317.24 : x
  2. Step 2: Convert to fraction form
    278,640.75/384,520.83 = 151,317.24/x
  3. Step 3: Cross multiply
    278,640.75x = 384,520.83 × 151,317.24
  4. Step 4: Simplify right side
    278,640.75x = 58,184,630,718.11
  5. Step 5: Solve for x
    x = 58,184,630,718.11/278,640.75
  6. Step 6: Final answer
    x = 208,815.94

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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.