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Finding the Fourth Proportional to 427,264, 641,005.44 and 161,026.72

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Solution

The fourth proportional to 427,264, 641,005.44 and 161,026.72 is: 241,581.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,264 : 641,005.44 = 161,026.72 : x
  2. Step 2: Convert to fraction form
    427,264/641,005.44 = 161,026.72/x
  3. Step 3: Cross multiply
    427,264x = 641,005.44 × 161,026.72
  4. Step 4: Simplify right side
    427,264x = 103,219,003,505.36
  5. Step 5: Solve for x
    x = 103,219,003,505.36/427,264
  6. Step 6: Final answer
    x = 241,581.33

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1.5x scale

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.