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Finding the Fourth Proportional to 538,291.81, 742,873.68 and 308,846.98

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Solution

The fourth proportional to 538,291.81, 742,873.68 and 308,846.98 is: 426,226.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,291.81 : 742,873.68 = 308,846.98 : x
  2. Step 2: Convert to fraction form
    538,291.81/742,873.68 = 308,846.98/x
  3. Step 3: Cross multiply
    538,291.81x = 742,873.68 × 308,846.98
  4. Step 4: Simplify right side
    538,291.81x = 229,434,289,339.41
  5. Step 5: Solve for x
    x = 229,434,289,339.41/538,291.81
  6. Step 6: Final answer
    x = 426,226.60

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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.