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Finding the Fourth Proportional to 548,148.02, 756,449.64 and 306,443.80

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Solution

The fourth proportional to 548,148.02, 756,449.64 and 306,443.80 is: 422,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,148.02 : 756,449.64 = 306,443.80 : x
  2. Step 2: Convert to fraction form
    548,148.02/756,449.64 = 306,443.80/x
  3. Step 3: Cross multiply
    548,148.02x = 756,449.64 × 306,443.80
  4. Step 4: Simplify right side
    548,148.02x = 231,809,302,190.23
  5. Step 5: Solve for x
    x = 231,809,302,190.23/548,148.02
  6. Step 6: Final answer
    x = 422,895.45

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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.