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Finding the Fourth Proportional to 272,708.63, 409,107.26 and 80,602.55

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Solution

The fourth proportional to 272,708.63, 409,107.26 and 80,602.55 is: 120,916.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,708.63 : 409,107.26 = 80,602.55 : x
  2. Step 2: Convert to fraction form
    272,708.63/409,107.26 = 80,602.55/x
  3. Step 3: Cross multiply
    272,708.63x = 409,107.26 × 80,602.55
  4. Step 4: Simplify right side
    272,708.63x = 32,975,088,379.51
  5. Step 5: Solve for x
    x = 32,975,088,379.51/272,708.63
  6. Step 6: Final answer
    x = 120,916.92

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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.