Home / 210,278.36-290,288.22-129,750.25

Finding the Fourth Proportional to 210,278.36, 290,288.22 and 129,750.25

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Solution

The fourth proportional to 210,278.36, 290,288.22 and 129,750.25 is: 179,119.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,278.36 : 290,288.22 = 129,750.25 : x
  2. Step 2: Convert to fraction form
    210,278.36/290,288.22 = 129,750.25/x
  3. Step 3: Cross multiply
    210,278.36x = 290,288.22 × 129,750.25
  4. Step 4: Simplify right side
    210,278.36x = 37,664,969,117.06
  5. Step 5: Solve for x
    x = 37,664,969,117.06/210,278.36
  6. Step 6: Final answer
    x = 179,119.57

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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.