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Finding the Fourth Proportional to 538,161.84, 742,672.44 and 308,719.44

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Solution

The fourth proportional to 538,161.84, 742,672.44 and 308,719.44 is: 426,038.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,161.84 : 742,672.44 = 308,719.44 : x
  2. Step 2: Convert to fraction form
    538,161.84/742,672.44 = 308,719.44/x
  3. Step 3: Cross multiply
    538,161.84x = 742,672.44 × 308,719.44
  4. Step 4: Simplify right side
    538,161.84x = 229,277,419,780.23
  5. Step 5: Solve for x
    x = 229,277,419,780.23/538,161.84
  6. Step 6: Final answer
    x = 426,038.05

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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.