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Finding the Fourth Proportional to 547,066.98, 754,990.47 and 305,396.73

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Solution

The fourth proportional to 547,066.98, 754,990.47 and 305,396.73 is: 421,468.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,066.98 : 754,990.47 = 305,396.73 : x
  2. Step 2: Convert to fraction form
    547,066.98/754,990.47 = 305,396.73/x
  3. Step 3: Cross multiply
    547,066.98x = 754,990.47 × 305,396.73
  4. Step 4: Simplify right side
    547,066.98x = 230,571,620,719.16
  5. Step 5: Solve for x
    x = 230,571,620,719.16/547,066.98
  6. Step 6: Final answer
    x = 421,468.72

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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.