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Finding the Fourth Proportional to 538,301.58, 742,873.02 and 308,900.87

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Solution

The fourth proportional to 538,301.58, 742,873.02 and 308,900.87 is: 426,292.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,301.58 : 742,873.02 = 308,900.87 : x
  2. Step 2: Convert to fraction form
    538,301.58/742,873.02 = 308,900.87/x
  3. Step 3: Cross multiply
    538,301.58x = 742,873.02 × 308,900.87
  4. Step 4: Simplify right side
    538,301.58x = 229,474,122,177.53
  5. Step 5: Solve for x
    x = 229,474,122,177.53/538,301.58
  6. Step 6: Final answer
    x = 426,292.86

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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.