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Finding the Fourth Proportional to 256,514.51, 384,735.62 and 88,031.88

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Solution

The fourth proportional to 256,514.51, 384,735.62 and 88,031.88 is: 132,035.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,514.51 : 384,735.62 = 88,031.88 : x
  2. Step 2: Convert to fraction form
    256,514.51/384,735.62 = 88,031.88/x
  3. Step 3: Cross multiply
    256,514.51x = 384,735.62 × 88,031.88
  4. Step 4: Simplify right side
    256,514.51x = 33,869,000,151.65
  5. Step 5: Solve for x
    x = 33,869,000,151.65/256,514.51
  6. Step 6: Final answer
    x = 132,035.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.