Home / 389,716.11-537,814.89-228,575.52

Finding the Fourth Proportional to 389,716.11, 537,814.89 and 228,575.52

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Solution

The fourth proportional to 389,716.11, 537,814.89 and 228,575.52 is: 315,438.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,716.11 : 537,814.89 = 228,575.52 : x
  2. Step 2: Convert to fraction form
    389,716.11/537,814.89 = 228,575.52/x
  3. Step 3: Cross multiply
    389,716.11x = 537,814.89 × 228,575.52
  4. Step 4: Simplify right side
    389,716.11x = 122,931,318,145.49
  5. Step 5: Solve for x
    x = 122,931,318,145.49/389,716.11
  6. Step 6: Final answer
    x = 315,438.12

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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.