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Finding the Fourth Proportional to 268,324.81, 402,483.11 and 68,643.51

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Solution

The fourth proportional to 268,324.81, 402,483.11 and 68,643.51 is: 102,964.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,324.81 : 402,483.11 = 68,643.51 : x
  2. Step 2: Convert to fraction form
    268,324.81/402,483.11 = 68,643.51/x
  3. Step 3: Cross multiply
    268,324.81x = 402,483.11 × 68,643.51
  4. Step 4: Simplify right side
    268,324.81x = 27,627,853,386.12
  5. Step 5: Solve for x
    x = 27,627,853,386.12/268,324.81
  6. Step 6: Final answer
    x = 102,964.21

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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.