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Finding the Fourth Proportional to 389,433.90, 537,422.67 and 228,384.30

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Solution

The fourth proportional to 389,433.90, 537,422.67 and 228,384.30 is: 315,172.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,433.90 : 537,422.67 = 228,384.30 : x
  2. Step 2: Convert to fraction form
    389,433.90/537,422.67 = 228,384.30/x
  3. Step 3: Cross multiply
    389,433.90x = 537,422.67 × 228,384.30
  4. Step 4: Simplify right side
    389,433.90x = 122,738,900,292.08
  5. Step 5: Solve for x
    x = 122,738,900,292.08/389,433.90
  6. Step 6: Final answer
    x = 315,172.61

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.