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Finding the Fourth Proportional to 355,060.96, 489,987.44 and 202,091.64

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Solution

The fourth proportional to 355,060.96, 489,987.44 and 202,091.64 is: 278,888.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,060.96 : 489,987.44 = 202,091.64 : x
  2. Step 2: Convert to fraction form
    355,060.96/489,987.44 = 202,091.64/x
  3. Step 3: Cross multiply
    355,060.96x = 489,987.44 × 202,091.64
  4. Step 4: Simplify right side
    355,060.96x = 99,022,365,329.00
  5. Step 5: Solve for x
    x = 99,022,365,329.00/355,060.96
  6. Step 6: Final answer
    x = 278,888.35

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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.