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Finding the Fourth Proportional to 389,613.53, 537,756.17 and 228,520.47

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Solution

The fourth proportional to 389,613.53, 537,756.17 and 228,520.47 is: 315,410.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,613.53 : 537,756.17 = 228,520.47 : x
  2. Step 2: Convert to fraction form
    389,613.53/537,756.17 = 228,520.47/x
  3. Step 3: Cross multiply
    389,613.53x = 537,756.17 × 228,520.47
  4. Step 4: Simplify right side
    389,613.53x = 122,888,291,571.20
  5. Step 5: Solve for x
    x = 122,888,291,571.20/389,613.53
  6. Step 6: Final answer
    x = 315,410.74

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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.