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Finding the Fourth Proportional to 308,048.22, 424,871.19 and 212,714.46

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Solution

The fourth proportional to 308,048.22, 424,871.19 and 212,714.46 is: 293,383.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,048.22 : 424,871.19 = 212,714.46 : x
  2. Step 2: Convert to fraction form
    308,048.22/424,871.19 = 212,714.46/x
  3. Step 3: Cross multiply
    308,048.22x = 424,871.19 × 212,714.46
  4. Step 4: Simplify right side
    308,048.22x = 90,376,245,750.41
  5. Step 5: Solve for x
    x = 90,376,245,750.41/308,048.22
  6. Step 6: Final answer
    x = 293,383.44

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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.