Home / 389,664.08-537,745-215,233.84

Finding the Fourth Proportional to 389,664.08, 537,745 and 215,233.84

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Solution

The fourth proportional to 389,664.08, 537,745 and 215,233.84 is: 297,027.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,664.08 : 537,745 = 215,233.84 : x
  2. Step 2: Convert to fraction form
    389,664.08/537,745 = 215,233.84/x
  3. Step 3: Cross multiply
    389,664.08x = 537,745 × 215,233.84
  4. Step 4: Simplify right side
    389,664.08x = 115,740,921,290.80
  5. Step 5: Solve for x
    x = 115,740,921,290.80/389,664.08
  6. Step 6: Final answer
    x = 297,027.43

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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.