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Finding the Fourth Proportional to 358,679.60, 538,090.28 and 105,964.56

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Solution

The fourth proportional to 358,679.60, 538,090.28 and 105,964.56 is: 158,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,679.60 : 538,090.28 = 105,964.56 : x
  2. Step 2: Convert to fraction form
    358,679.60/538,090.28 = 105,964.56/x
  3. Step 3: Cross multiply
    358,679.60x = 538,090.28 × 105,964.56
  4. Step 4: Simplify right side
    358,679.60x = 57,018,499,760.48
  5. Step 5: Solve for x
    x = 57,018,499,760.48/358,679.60
  6. Step 6: Final answer
    x = 158,967.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.