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Finding the Fourth Proportional to 223,726.40, 335,706.60 and 90,620.72

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Solution

The fourth proportional to 223,726.40, 335,706.60 and 90,620.72 is: 135,978.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,726.40 : 335,706.60 = 90,620.72 : x
  2. Step 2: Convert to fraction form
    223,726.40/335,706.60 = 90,620.72/x
  3. Step 3: Cross multiply
    223,726.40x = 335,706.60 × 90,620.72
  4. Step 4: Simplify right side
    223,726.40x = 30,421,973,800.75
  5. Step 5: Solve for x
    x = 30,421,973,800.75/223,726.40
  6. Step 6: Final answer
    x = 135,978.47

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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.