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Finding the Fourth Proportional to 445,703.67, 668,489.81 and 146,215.89

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Solution

The fourth proportional to 445,703.67, 668,489.81 and 146,215.89 is: 219,302.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,703.67 : 668,489.81 = 146,215.89 : x
  2. Step 2: Convert to fraction form
    445,703.67/668,489.81 = 146,215.89/x
  3. Step 3: Cross multiply
    445,703.67x = 668,489.81 × 146,215.89
  4. Step 4: Simplify right side
    445,703.67x = 97,743,831,794.00
  5. Step 5: Solve for x
    x = 97,743,831,794.00/445,703.67
  6. Step 6: Final answer
    x = 219,302.28

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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.