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Finding the Fourth Proportional to 248,864.80, 374,218.80 and 208,314.40

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Solution

The fourth proportional to 248,864.80, 374,218.80 and 208,314.40 is: 313,243.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,864.80 : 374,218.80 = 208,314.40 : x
  2. Step 2: Convert to fraction form
    248,864.80/374,218.80 = 208,314.40/x
  3. Step 3: Cross multiply
    248,864.80x = 374,218.80 × 208,314.40
  4. Step 4: Simplify right side
    248,864.80x = 77,955,164,790.72
  5. Step 5: Solve for x
    x = 77,955,164,790.72/248,864.80
  6. Step 6: Final answer
    x = 313,243.03

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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.