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Finding the Fourth Proportional to 389,488.52, 537,583.83 and 228,395.47

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Solution

The fourth proportional to 389,488.52, 537,583.83 and 228,395.47 is: 315,238.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,488.52 : 537,583.83 = 228,395.47 : x
  2. Step 2: Convert to fraction form
    389,488.52/537,583.83 = 228,395.47/x
  3. Step 3: Cross multiply
    389,488.52x = 537,583.83 × 228,395.47
  4. Step 4: Simplify right side
    389,488.52x = 122,781,707,687.35
  5. Step 5: Solve for x
    x = 122,781,707,687.35/389,488.52
  6. Step 6: Final answer
    x = 315,238.32

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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.