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Finding the Fourth Proportional to 258,115.43, 356,221.37 and 150,719.76

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Solution

The fourth proportional to 258,115.43, 356,221.37 and 150,719.76 is: 208,006.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,115.43 : 356,221.37 = 150,719.76 : x
  2. Step 2: Convert to fraction form
    258,115.43/356,221.37 = 150,719.76/x
  3. Step 3: Cross multiply
    258,115.43x = 356,221.37 × 150,719.76
  4. Step 4: Simplify right side
    258,115.43x = 53,689,599,770.07
  5. Step 5: Solve for x
    x = 53,689,599,770.07/258,115.43
  6. Step 6: Final answer
    x = 208,006.16

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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.