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Finding the Fourth Proportional to 389,297.58, 537,128.98 and 228,065.95

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Solution

The fourth proportional to 389,297.58, 537,128.98 and 228,065.95 is: 314,671.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,297.58 : 537,128.98 = 228,065.95 : x
  2. Step 2: Convert to fraction form
    389,297.58/537,128.98 = 228,065.95/x
  3. Step 3: Cross multiply
    389,297.58x = 537,128.98 × 228,065.95
  4. Step 4: Simplify right side
    389,297.58x = 122,500,831,096.23
  5. Step 5: Solve for x
    x = 122,500,831,096.23/389,297.58
  6. Step 6: Final answer
    x = 314,671.44

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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.