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Finding the Fourth Proportional to 256,117.83, 384,049.64 and 87,590.39

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Solution

The fourth proportional to 256,117.83, 384,049.64 and 87,590.39 is: 131,342.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,117.83 : 384,049.64 = 87,590.39 : x
  2. Step 2: Convert to fraction form
    256,117.83/384,049.64 = 87,590.39/x
  3. Step 3: Cross multiply
    256,117.83x = 384,049.64 × 87,590.39
  4. Step 4: Simplify right side
    256,117.83x = 33,639,055,388.76
  5. Step 5: Solve for x
    x = 33,639,055,388.76/256,117.83
  6. Step 6: Final answer
    x = 131,342.11

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1.5x scale

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.