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Finding the Fourth Proportional to 389,403.84, 537,384.30 and 228,375.03

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Solution

The fourth proportional to 389,403.84, 537,384.30 and 228,375.03 is: 315,161.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,403.84 : 537,384.30 = 228,375.03 : x
  2. Step 2: Convert to fraction form
    389,403.84/537,384.30 = 228,375.03/x
  3. Step 3: Cross multiply
    389,403.84x = 537,384.30 × 228,375.03
  4. Step 4: Simplify right side
    389,403.84x = 122,725,158,220.16
  5. Step 5: Solve for x
    x = 122,725,158,220.16/389,403.84
  6. Step 6: Final answer
    x = 315,161.65

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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.