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Finding the Fourth Proportional to 548,145.01, 756,445.50 and 306,440.81

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Solution

The fourth proportional to 548,145.01, 756,445.50 and 306,440.81 is: 422,891.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,145.01 : 756,445.50 = 306,440.81 : x
  2. Step 2: Convert to fraction form
    548,145.01/756,445.50 = 306,440.81/x
  3. Step 3: Cross multiply
    548,145.01x = 756,445.50 × 306,440.81
  4. Step 4: Simplify right side
    548,145.01x = 231,805,771,740.86
  5. Step 5: Solve for x
    x = 231,805,771,740.86/548,145.01
  6. Step 6: Final answer
    x = 422,891.33

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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.