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Finding the Fourth Proportional to 307,212, 460,999.44 and 129,707.52

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Solution

The fourth proportional to 307,212, 460,999.44 and 129,707.52 is: 194,637.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,212 : 460,999.44 = 129,707.52 : x
  2. Step 2: Convert to fraction form
    307,212/460,999.44 = 129,707.52/x
  3. Step 3: Cross multiply
    307,212x = 460,999.44 × 129,707.52
  4. Step 4: Simplify right side
    307,212x = 59,795,094,083.79
  5. Step 5: Solve for x
    x = 59,795,094,083.79/307,212
  6. Step 6: Final answer
    x = 194,637.89

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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.