Home / 210,542.91-290,556.39-115,055.76

Finding the Fourth Proportional to 210,542.91, 290,556.39 and 115,055.76

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Solution

The fourth proportional to 210,542.91, 290,556.39 and 115,055.76 is: 158,780.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,542.91 : 290,556.39 = 115,055.76 : x
  2. Step 2: Convert to fraction form
    210,542.91/290,556.39 = 115,055.76/x
  3. Step 3: Cross multiply
    210,542.91x = 290,556.39 × 115,055.76
  4. Step 4: Simplify right side
    210,542.91x = 33,430,186,274.31
  5. Step 5: Solve for x
    x = 33,430,186,274.31/210,542.91
  6. Step 6: Final answer
    x = 158,780.87

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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.