Home / 389,382.12-537,245.46-228,150.72

Finding the Fourth Proportional to 389,382.12, 537,245.46 and 228,150.72

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Solution

The fourth proportional to 389,382.12, 537,245.46 and 228,150.72 is: 314,788.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,382.12 : 537,245.46 = 228,150.72 : x
  2. Step 2: Convert to fraction form
    389,382.12/537,245.46 = 228,150.72/x
  3. Step 3: Cross multiply
    389,382.12x = 537,245.46 × 228,150.72
  4. Step 4: Simplify right side
    389,382.12x = 122,572,938,515.73
  5. Step 5: Solve for x
    x = 122,572,938,515.73/389,382.12
  6. Step 6: Final answer
    x = 314,788.31

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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.