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Finding the Fourth Proportional to 384,457.05, 530,540.44 and 212,371.31

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Solution

The fourth proportional to 384,457.05, 530,540.44 and 212,371.31 is: 293,066.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,457.05 : 530,540.44 = 212,371.31 : x
  2. Step 2: Convert to fraction form
    384,457.05/530,540.44 = 212,371.31/x
  3. Step 3: Cross multiply
    384,457.05x = 530,540.44 × 212,371.31
  4. Step 4: Simplify right side
    384,457.05x = 112,671,567,941.92
  5. Step 5: Solve for x
    x = 112,671,567,941.92/384,457.05
  6. Step 6: Final answer
    x = 293,066.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.