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Finding the Fourth Proportional to 548,642.43, 757,091.00 and 306,883.55

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Solution

The fourth proportional to 548,642.43, 757,091.00 and 306,883.55 is: 423,479.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,642.43 : 757,091.00 = 306,883.55 : x
  2. Step 2: Convert to fraction form
    548,642.43/757,091.00 = 306,883.55/x
  3. Step 3: Cross multiply
    548,642.43x = 757,091.00 × 306,883.55
  4. Step 4: Simplify right side
    548,642.43x = 232,338,776,412.99
  5. Step 5: Solve for x
    x = 232,338,776,412.99/548,642.43
  6. Step 6: Final answer
    x = 423,479.42

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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.