Home / 389,109.60-537,090.88-228,016.53

Finding the Fourth Proportional to 389,109.60, 537,090.88 and 228,016.53

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Solution

The fourth proportional to 389,109.60, 537,090.88 and 228,016.53 is: 314,732.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,109.60 : 537,090.88 = 228,016.53 : x
  2. Step 2: Convert to fraction form
    389,109.60/537,090.88 = 228,016.53/x
  3. Step 3: Cross multiply
    389,109.60x = 537,090.88 × 228,016.53
  4. Step 4: Simplify right side
    389,109.60x = 122,465,598,752.25
  5. Step 5: Solve for x
    x = 122,465,598,752.25/389,109.60
  6. Step 6: Final answer
    x = 314,732.92

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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.