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Finding the Fourth Proportional to 256,469.50, 353,928.06 and 143,292.26

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Solution

The fourth proportional to 256,469.50, 353,928.06 and 143,292.26 is: 197,743.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,469.50 : 353,928.06 = 143,292.26 : x
  2. Step 2: Convert to fraction form
    256,469.50/353,928.06 = 143,292.26/x
  3. Step 3: Cross multiply
    256,469.50x = 353,928.06 × 143,292.26
  4. Step 4: Simplify right side
    256,469.50x = 50,715,151,594.82
  5. Step 5: Solve for x
    x = 50,715,151,594.82/256,469.50
  6. Step 6: Final answer
    x = 197,743.40

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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.