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Finding the Fourth Proportional to 389,387.88, 537,470.16 and 228,277.80

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Solution

The fourth proportional to 389,387.88, 537,470.16 and 228,277.80 is: 315,090.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,387.88 : 537,470.16 = 228,277.80 : x
  2. Step 2: Convert to fraction form
    389,387.88/537,470.16 = 228,277.80/x
  3. Step 3: Cross multiply
    389,387.88x = 537,470.16 × 228,277.80
  4. Step 4: Simplify right side
    389,387.88x = 122,692,505,690.45
  5. Step 5: Solve for x
    x = 122,692,505,690.45/389,387.88
  6. Step 6: Final answer
    x = 315,090.72

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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.