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Finding the Fourth Proportional to 208,877.84, 313,301.26 and 66,717.37

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Solution

The fourth proportional to 208,877.84, 313,301.26 and 66,717.37 is: 100,071.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,877.84 : 313,301.26 = 66,717.37 : x
  2. Step 2: Convert to fraction form
    208,877.84/313,301.26 = 66,717.37/x
  3. Step 3: Cross multiply
    208,877.84x = 313,301.26 × 66,717.37
  4. Step 4: Simplify right side
    208,877.84x = 20,902,634,184.79
  5. Step 5: Solve for x
    x = 20,902,634,184.79/208,877.84
  6. Step 6: Final answer
    x = 100,071.10

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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.