Home / 389,611.40-537,753.24-228,518.34

Finding the Fourth Proportional to 389,611.40, 537,753.24 and 228,518.34

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Solution

The fourth proportional to 389,611.40, 537,753.24 and 228,518.34 is: 315,407.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,611.40 : 537,753.24 = 228,518.34 : x
  2. Step 2: Convert to fraction form
    389,611.40/537,753.24 = 228,518.34/x
  3. Step 3: Cross multiply
    389,611.40x = 537,753.24 × 228,518.34
  4. Step 4: Simplify right side
    389,611.40x = 122,886,476,591.83
  5. Step 5: Solve for x
    x = 122,886,476,591.83/389,611.40
  6. Step 6: Final answer
    x = 315,407.81

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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.