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Finding the Fourth Proportional to 538,242.44, 742,878.87 and 308,935.49

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Solution

The fourth proportional to 538,242.44, 742,878.87 and 308,935.49 is: 426,390.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,242.44 : 742,878.87 = 308,935.49 : x
  2. Step 2: Convert to fraction form
    538,242.44/742,878.87 = 308,935.49/x
  3. Step 3: Cross multiply
    538,242.44x = 742,878.87 × 308,935.49
  4. Step 4: Simplify right side
    538,242.44x = 229,501,647,714.10
  5. Step 5: Solve for x
    x = 229,501,647,714.10/538,242.44
  6. Step 6: Final answer
    x = 426,390.84

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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.