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Finding the Fourth Proportional to 268,323.20, 402,139.20 and 205,683.20

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Solution

The fourth proportional to 268,323.20, 402,139.20 and 205,683.20 is: 308,259.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,323.20 : 402,139.20 = 205,683.20 : x
  2. Step 2: Convert to fraction form
    268,323.20/402,139.20 = 205,683.20/x
  3. Step 3: Cross multiply
    268,323.20x = 402,139.20 × 205,683.20
  4. Step 4: Simplify right side
    268,323.20x = 82,713,277,501.44
  5. Step 5: Solve for x
    x = 82,713,277,501.44/268,323.20
  6. Step 6: Final answer
    x = 308,259.88

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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.