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Finding the Fourth Proportional to 256,036.62, 353,330.30 and 142,859.37

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Solution

The fourth proportional to 256,036.62, 353,330.30 and 142,859.37 is: 197,145.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,036.62 : 353,330.30 = 142,859.37 : x
  2. Step 2: Convert to fraction form
    256,036.62/353,330.30 = 142,859.37/x
  3. Step 3: Cross multiply
    256,036.62x = 353,330.30 × 142,859.37
  4. Step 4: Simplify right side
    256,036.62x = 50,476,544,059.91
  5. Step 5: Solve for x
    x = 50,476,544,059.91/256,036.62
  6. Step 6: Final answer
    x = 197,145.80

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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.