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Finding the Fourth Proportional to 300,124.75, 450,020.93 and 122,756.31

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Solution

The fourth proportional to 300,124.75, 450,020.93 and 122,756.31 is: 184,066.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,124.75 : 450,020.93 = 122,756.31 : x
  2. Step 2: Convert to fraction form
    300,124.75/450,020.93 = 122,756.31/x
  3. Step 3: Cross multiply
    300,124.75x = 450,020.93 × 122,756.31
  4. Step 4: Simplify right side
    300,124.75x = 55,242,908,789.57
  5. Step 5: Solve for x
    x = 55,242,908,789.57/300,124.75
  6. Step 6: Final answer
    x = 184,066.49

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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.