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Finding the Fourth Proportional to 268,057.56, 369,868 and 171,312

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Solution

The fourth proportional to 268,057.56, 369,868 and 171,312 is: 236,377.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,057.56 : 369,868 = 171,312 : x
  2. Step 2: Convert to fraction form
    268,057.56/369,868 = 171,312/x
  3. Step 3: Cross multiply
    268,057.56x = 369,868 × 171,312
  4. Step 4: Simplify right side
    268,057.56x = 63,362,826,816
  5. Step 5: Solve for x
    x = 63,362,826,816/268,057.56
  6. Step 6: Final answer
    x = 236,377.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.