Home / 389,577.60-537,667.20-228,441.60

Finding the Fourth Proportional to 389,577.60, 537,667.20 and 228,441.60

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Solution

The fourth proportional to 389,577.60, 537,667.20 and 228,441.60 is: 315,278.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,577.60 : 537,667.20 = 228,441.60 : x
  2. Step 2: Convert to fraction form
    389,577.60/537,667.20 = 228,441.60/x
  3. Step 3: Cross multiply
    389,577.60x = 537,667.20 × 228,441.60
  4. Step 4: Simplify right side
    389,577.60x = 122,825,555,435.52
  5. Step 5: Solve for x
    x = 122,825,555,435.52/389,577.60
  6. Step 6: Final answer
    x = 315,278.79

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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.