Home / 389,105.21-537,084.84-228,012.15

Finding the Fourth Proportional to 389,105.21, 537,084.84 and 228,012.15

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Solution

The fourth proportional to 389,105.21, 537,084.84 and 228,012.15 is: 314,726.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,105.21 : 537,084.84 = 228,012.15 : x
  2. Step 2: Convert to fraction form
    389,105.21/537,084.84 = 228,012.15/x
  3. Step 3: Cross multiply
    389,105.21x = 537,084.84 × 228,012.15
  4. Step 4: Simplify right side
    389,105.21x = 122,461,869,100.81
  5. Step 5: Solve for x
    x = 122,461,869,100.81/389,105.21
  6. Step 6: Final answer
    x = 314,726.88

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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.