Home / 389,300.26-537,234.78-228,123.22

Finding the Fourth Proportional to 389,300.26, 537,234.78 and 228,123.22

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Solution

The fourth proportional to 389,300.26, 537,234.78 and 228,123.22 is: 314,810.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,300.26 : 537,234.78 = 228,123.22 : x
  2. Step 2: Convert to fraction form
    389,300.26/537,234.78 = 228,123.22/x
  3. Step 3: Cross multiply
    389,300.26x = 537,234.78 × 228,123.22
  4. Step 4: Simplify right side
    389,300.26x = 122,555,727,909.59
  5. Step 5: Solve for x
    x = 122,555,727,909.59/389,300.26
  6. Step 6: Final answer
    x = 314,810.29

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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.