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Finding the Fourth Proportional to 223,805.70, 335,708.55 and 90,690.30

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Solution

The fourth proportional to 223,805.70, 335,708.55 and 90,690.30 is: 136,035.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,805.70 : 335,708.55 = 90,690.30 : x
  2. Step 2: Convert to fraction form
    223,805.70/335,708.55 = 90,690.30/x
  3. Step 3: Cross multiply
    223,805.70x = 335,708.55 × 90,690.30
  4. Step 4: Simplify right side
    223,805.70x = 30,445,509,112.07
  5. Step 5: Solve for x
    x = 30,445,509,112.07/223,805.70
  6. Step 6: Final answer
    x = 136,035.45

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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.