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Finding the Fourth Proportional to 451,020.05, 622,261.22 and 307,530.98

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Solution

The fourth proportional to 451,020.05, 622,261.22 and 307,530.98 is: 424,292.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,020.05 : 622,261.22 = 307,530.98 : x
  2. Step 2: Convert to fraction form
    451,020.05/622,261.22 = 307,530.98/x
  3. Step 3: Cross multiply
    451,020.05x = 622,261.22 × 307,530.98
  4. Step 4: Simplify right side
    451,020.05x = 191,364,598,153.64
  5. Step 5: Solve for x
    x = 191,364,598,153.64/451,020.05
  6. Step 6: Final answer
    x = 424,292.89

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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.