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Finding the Fourth Proportional to 303,365.70, 455,048.55 and 81,749.70

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Solution

The fourth proportional to 303,365.70, 455,048.55 and 81,749.70 is: 122,624.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,365.70 : 455,048.55 = 81,749.70 : x
  2. Step 2: Convert to fraction form
    303,365.70/455,048.55 = 81,749.70/x
  3. Step 3: Cross multiply
    303,365.70x = 455,048.55 × 81,749.70
  4. Step 4: Simplify right side
    303,365.70x = 37,200,082,447.94
  5. Step 5: Solve for x
    x = 37,200,082,447.94/303,365.70
  6. Step 6: Final answer
    x = 122,624.55

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1.5x scale

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.