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Finding the Fourth Proportional to 245,771.70, 368,657.55 and 79,559.70

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Solution

The fourth proportional to 245,771.70, 368,657.55 and 79,559.70 is: 119,339.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,771.70 : 368,657.55 = 79,559.70 : x
  2. Step 2: Convert to fraction form
    245,771.70/368,657.55 = 79,559.70/x
  3. Step 3: Cross multiply
    245,771.70x = 368,657.55 × 79,559.70
  4. Step 4: Simplify right side
    245,771.70x = 29,330,284,080.74
  5. Step 5: Solve for x
    x = 29,330,284,080.74/245,771.70
  6. Step 6: Final answer
    x = 119,339.55

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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.