Home / 389,421.36-537,408.48-228,392.58

Finding the Fourth Proportional to 389,421.36, 537,408.48 and 228,392.58

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Solution

The fourth proportional to 389,421.36, 537,408.48 and 228,392.58 is: 315,185.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,421.36 : 537,408.48 = 228,392.58 : x
  2. Step 2: Convert to fraction form
    389,421.36/537,408.48 = 228,392.58/x
  3. Step 3: Cross multiply
    389,421.36x = 537,408.48 × 228,392.58
  4. Step 4: Simplify right side
    389,421.36x = 122,740,109,261.08
  5. Step 5: Solve for x
    x = 122,740,109,261.08/389,421.36
  6. Step 6: Final answer
    x = 315,185.87

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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.