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Finding the Fourth Proportional to 358,890.40, 538,076.40 and 201,167.20

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Solution

The fourth proportional to 358,890.40, 538,076.40 and 201,167.20 is: 301,605.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,890.40 : 538,076.40 = 201,167.20 : x
  2. Step 2: Convert to fraction form
    358,890.40/538,076.40 = 201,167.20/x
  3. Step 3: Cross multiply
    358,890.40x = 538,076.40 × 201,167.20
  4. Step 4: Simplify right side
    358,890.40x = 108,243,322,774.08
  5. Step 5: Solve for x
    x = 108,243,322,774.08/358,890.40
  6. Step 6: Final answer
    x = 301,605.51

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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.