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Finding the Fourth Proportional to 508,143.72, 762,215.64 and 134,169.96

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Solution

The fourth proportional to 508,143.72, 762,215.64 and 134,169.96 is: 201,254.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,143.72 : 762,215.64 = 134,169.96 : x
  2. Step 2: Convert to fraction form
    508,143.72/762,215.64 = 134,169.96/x
  3. Step 3: Cross multiply
    508,143.72x = 762,215.64 × 134,169.96
  4. Step 4: Simplify right side
    508,143.72x = 102,266,441,930.17
  5. Step 5: Solve for x
    x = 102,266,441,930.17/508,143.72
  6. Step 6: Final answer
    x = 201,254.96

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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.