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Finding the Fourth Proportional to 255,956.88, 353,160.36 and 155,335.44

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Solution

The fourth proportional to 255,956.88, 353,160.36 and 155,335.44 is: 214,326.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,956.88 : 353,160.36 = 155,335.44 : x
  2. Step 2: Convert to fraction form
    255,956.88/353,160.36 = 155,335.44/x
  3. Step 3: Cross multiply
    255,956.88x = 353,160.36 × 155,335.44
  4. Step 4: Simplify right side
    255,956.88x = 54,858,319,911.16
  5. Step 5: Solve for x
    x = 54,858,319,911.16/255,956.88
  6. Step 6: Final answer
    x = 214,326.41

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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.