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Finding the Fourth Proportional to 548,986.80, 757,429.12 and 307,230.96

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Solution

The fourth proportional to 548,986.80, 757,429.12 and 307,230.96 is: 423,882.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,986.80 : 757,429.12 = 307,230.96 : x
  2. Step 2: Convert to fraction form
    548,986.80/757,429.12 = 307,230.96/x
  3. Step 3: Cross multiply
    548,986.80x = 757,429.12 × 307,230.96
  4. Step 4: Simplify right side
    548,986.80x = 232,705,675,669.56
  5. Step 5: Solve for x
    x = 232,705,675,669.56/548,986.80
  6. Step 6: Final answer
    x = 423,882.10

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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.