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Finding the Fourth Proportional to 223,878.40, 335,815.56 and 90,727

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Solution

The fourth proportional to 223,878.40, 335,815.56 and 90,727 is: 136,089.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,878.40 : 335,815.56 = 90,727 : x
  2. Step 2: Convert to fraction form
    223,878.40/335,815.56 = 90,727/x
  3. Step 3: Cross multiply
    223,878.40x = 335,815.56 × 90,727
  4. Step 4: Simplify right side
    223,878.40x = 30,467,538,312.12
  5. Step 5: Solve for x
    x = 30,467,538,312.12/223,878.40
  6. Step 6: Final answer
    x = 136,089.67

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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.