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Finding the Fourth Proportional to 410,257.56, 615,279.09 and 121,991.58

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Solution

The fourth proportional to 410,257.56, 615,279.09 and 121,991.58 is: 182,955.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,257.56 : 615,279.09 = 121,991.58 : x
  2. Step 2: Convert to fraction form
    410,257.56/615,279.09 = 121,991.58/x
  3. Step 3: Cross multiply
    410,257.56x = 615,279.09 × 121,991.58
  4. Step 4: Simplify right side
    410,257.56x = 75,058,868,330.06
  5. Step 5: Solve for x
    x = 75,058,868,330.06/410,257.56
  6. Step 6: Final answer
    x = 182,955.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.