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Finding the Fourth Proportional to 223,928.40, 335,886.50 and 90,805.70

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Solution

The fourth proportional to 223,928.40, 335,886.50 and 90,805.70 is: 136,206.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,928.40 : 335,886.50 = 90,805.70 : x
  2. Step 2: Convert to fraction form
    223,928.40/335,886.50 = 90,805.70/x
  3. Step 3: Cross multiply
    223,928.40x = 335,886.50 × 90,805.70
  4. Step 4: Simplify right side
    223,928.40x = 30,500,408,753.05
  5. Step 5: Solve for x
    x = 30,500,408,753.05/223,928.40
  6. Step 6: Final answer
    x = 136,206.08

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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.