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Finding the Fourth Proportional to 658,728.56, 987,330.21 and 302,996.00

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Solution

The fourth proportional to 658,728.56, 987,330.21 and 302,996.00 is: 454,143.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,728.56 : 987,330.21 = 302,996.00 : x
  2. Step 2: Convert to fraction form
    658,728.56/987,330.21 = 302,996.00/x
  3. Step 3: Cross multiply
    658,728.56x = 987,330.21 × 302,996.00
  4. Step 4: Simplify right side
    658,728.56x = 299,157,099,372.51
  5. Step 5: Solve for x
    x = 299,157,099,372.51/658,728.56
  6. Step 6: Final answer
    x = 454,143.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.