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Finding the Fourth Proportional to 278,608.56, 384,283.08 and 171,239.01

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Solution

The fourth proportional to 278,608.56, 384,283.08 and 171,239.01 is: 236,188.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,608.56 : 384,283.08 = 171,239.01 : x
  2. Step 2: Convert to fraction form
    278,608.56/384,283.08 = 171,239.01/x
  3. Step 3: Cross multiply
    278,608.56x = 384,283.08 × 171,239.01
  4. Step 4: Simplify right side
    278,608.56x = 65,804,254,178.95
  5. Step 5: Solve for x
    x = 65,804,254,178.95/278,608.56
  6. Step 6: Final answer
    x = 236,188.92

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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.