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Finding the Fourth Proportional to 235,790.45, 353,741.01 and 78,018.89

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Solution

The fourth proportional to 235,790.45, 353,741.01 and 78,018.89 is: 117,046.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,790.45 : 353,741.01 = 78,018.89 : x
  2. Step 2: Convert to fraction form
    235,790.45/353,741.01 = 78,018.89/x
  3. Step 3: Cross multiply
    235,790.45x = 353,741.01 × 78,018.89
  4. Step 4: Simplify right side
    235,790.45x = 27,598,479,178.97
  5. Step 5: Solve for x
    x = 27,598,479,178.97/235,790.45
  6. Step 6: Final answer
    x = 117,046.64

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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.