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Finding the Fourth Proportional to 309,016.54, 426,256.59 and 181,587.34

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Solution

The fourth proportional to 309,016.54, 426,256.59 and 181,587.34 is: 250,481.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,016.54 : 426,256.59 = 181,587.34 : x
  2. Step 2: Convert to fraction form
    309,016.54/426,256.59 = 181,587.34/x
  3. Step 3: Cross multiply
    309,016.54x = 426,256.59 × 181,587.34
  4. Step 4: Simplify right side
    309,016.54x = 77,402,800,335.57
  5. Step 5: Solve for x
    x = 77,402,800,335.57/309,016.54
  6. Step 6: Final answer
    x = 250,481.09

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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.