Home / 278,515.63-384,350.62-151,190.31

Finding the Fourth Proportional to 278,515.63, 384,350.62 and 151,190.31

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Solution

The fourth proportional to 278,515.63, 384,350.62 and 151,190.31 is: 208,642.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,515.63 : 384,350.62 = 151,190.31 : x
  2. Step 2: Convert to fraction form
    278,515.63/384,350.62 = 151,190.31/x
  3. Step 3: Cross multiply
    278,515.63x = 384,350.62 × 151,190.31
  4. Step 4: Simplify right side
    278,515.63x = 58,110,088,630.54
  5. Step 5: Solve for x
    x = 58,110,088,630.54/278,515.63
  6. Step 6: Final answer
    x = 208,642.11

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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.