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Finding the Fourth Proportional to 323,670.81, 486,309.29 and 209,891.01

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Solution

The fourth proportional to 323,670.81, 486,309.29 and 209,891.01 is: 315,357.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,670.81 : 486,309.29 = 209,891.01 : x
  2. Step 2: Convert to fraction form
    323,670.81/486,309.29 = 209,891.01/x
  3. Step 3: Cross multiply
    323,670.81x = 486,309.29 × 209,891.01
  4. Step 4: Simplify right side
    323,670.81x = 102,071,947,001.03
  5. Step 5: Solve for x
    x = 102,071,947,001.03/323,670.81
  6. Step 6: Final answer
    x = 315,357.28

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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.