Home / 389,430.45-537,420.96-228,401.64

Finding the Fourth Proportional to 389,430.45, 537,420.96 and 228,401.64

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Solution

The fourth proportional to 389,430.45, 537,420.96 and 228,401.64 is: 315,198.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,430.45 : 537,420.96 = 228,401.64 : x
  2. Step 2: Convert to fraction form
    389,430.45/537,420.96 = 228,401.64/x
  3. Step 3: Cross multiply
    389,430.45x = 537,420.96 × 228,401.64
  4. Step 4: Simplify right side
    389,430.45x = 122,747,828,634.37
  5. Step 5: Solve for x
    x = 122,747,828,634.37/389,430.45
  6. Step 6: Final answer
    x = 315,198.33

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1.5x scale

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.