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Finding the Fourth Proportional to 538,238.44, 742,873.35 and 308,931.49

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Solution

The fourth proportional to 538,238.44, 742,873.35 and 308,931.49 is: 426,385.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,238.44 : 742,873.35 = 308,931.49 : x
  2. Step 2: Convert to fraction form
    538,238.44/742,873.35 = 308,931.49/x
  3. Step 3: Cross multiply
    538,238.44x = 742,873.35 × 308,931.49
  4. Step 4: Simplify right side
    538,238.44x = 229,496,970,896.79
  5. Step 5: Solve for x
    x = 229,496,970,896.79/538,238.44
  6. Step 6: Final answer
    x = 426,385.32

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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.