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Finding the Fourth Proportional to 548,988.66, 757,604.21 and 307,271.25

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Solution

The fourth proportional to 548,988.66, 757,604.21 and 307,271.25 is: 424,034.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,988.66 : 757,604.21 = 307,271.25 : x
  2. Step 2: Convert to fraction form
    548,988.66/757,604.21 = 307,271.25/x
  3. Step 3: Cross multiply
    548,988.66x = 757,604.21 × 307,271.25
  4. Step 4: Simplify right side
    548,988.66x = 232,789,992,611.96
  5. Step 5: Solve for x
    x = 232,789,992,611.96/548,988.66
  6. Step 6: Final answer
    x = 424,034.25

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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.