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Finding the Fourth Proportional to 245,409.85, 338,527.27 and 147,267.69

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Solution

The fourth proportional to 245,409.85, 338,527.27 and 147,267.69 is: 203,146.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,409.85 : 338,527.27 = 147,267.69 : x
  2. Step 2: Convert to fraction form
    245,409.85/338,527.27 = 147,267.69/x
  3. Step 3: Cross multiply
    245,409.85x = 338,527.27 × 147,267.69
  4. Step 4: Simplify right side
    245,409.85x = 49,854,131,240.03
  5. Step 5: Solve for x
    x = 49,854,131,240.03/245,409.85
  6. Step 6: Final answer
    x = 203,146.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.