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Finding the Fourth Proportional to 451,313.67, 622,731.20 and 290,131.77

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Solution

The fourth proportional to 451,313.67, 622,731.20 and 290,131.77 is: 400,329.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,313.67 : 622,731.20 = 290,131.77 : x
  2. Step 2: Convert to fraction form
    451,313.67/622,731.20 = 290,131.77/x
  3. Step 3: Cross multiply
    451,313.67x = 622,731.20 × 290,131.77
  4. Step 4: Simplify right side
    451,313.67x = 180,674,103,839.57
  5. Step 5: Solve for x
    x = 180,674,103,839.57/451,313.67
  6. Step 6: Final answer
    x = 400,329.34

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1.5x scale

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.