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Finding the Fourth Proportional to 210,551.56, 290,556.36 and 115,058.83

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Solution

The fourth proportional to 210,551.56, 290,556.36 and 115,058.83 is: 158,778.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,551.56 : 290,556.36 = 115,058.83 : x
  2. Step 2: Convert to fraction form
    210,551.56/290,556.36 = 115,058.83/x
  3. Step 3: Cross multiply
    210,551.56x = 290,556.36 × 115,058.83
  4. Step 4: Simplify right side
    210,551.56x = 33,431,074,830.66
  5. Step 5: Solve for x
    x = 33,431,074,830.66/210,551.56
  6. Step 6: Final answer
    x = 158,778.57

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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.