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Finding the Fourth Proportional to 248,859.80, 374,211.30 and 208,309.40

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Solution

The fourth proportional to 248,859.80, 374,211.30 and 208,309.40 is: 313,235.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,859.80 : 374,211.30 = 208,309.40 : x
  2. Step 2: Convert to fraction form
    248,859.80/374,211.30 = 208,309.40/x
  3. Step 3: Cross multiply
    248,859.80x = 374,211.30 × 208,309.40
  4. Step 4: Simplify right side
    248,859.80x = 77,951,731,376.22
  5. Step 5: Solve for x
    x = 77,951,731,376.22/248,859.80
  6. Step 6: Final answer
    x = 313,235.53

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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.