Home / 389,813.87-537,951.96-228,785.06

Finding the Fourth Proportional to 389,813.87, 537,951.96 and 228,785.06

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Solution

The fourth proportional to 389,813.87, 537,951.96 and 228,785.06 is: 315,728.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,813.87 : 537,951.96 = 228,785.06 : x
  2. Step 2: Convert to fraction form
    389,813.87/537,951.96 = 228,785.06/x
  3. Step 3: Cross multiply
    389,813.87x = 537,951.96 × 228,785.06
  4. Step 4: Simplify right side
    389,813.87x = 123,075,369,121.16
  5. Step 5: Solve for x
    x = 123,075,369,121.16/389,813.87
  6. Step 6: Final answer
    x = 315,728.56

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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.