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Finding the Fourth Proportional to 389,365.76, 537,324 and 219,599.36

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Solution

The fourth proportional to 389,365.76, 537,324 and 219,599.36 is: 303,046.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,365.76 : 537,324 = 219,599.36 : x
  2. Step 2: Convert to fraction form
    389,365.76/537,324 = 219,599.36/x
  3. Step 3: Cross multiply
    389,365.76x = 537,324 × 219,599.36
  4. Step 4: Simplify right side
    389,365.76x = 117,996,006,512.64
  5. Step 5: Solve for x
    x = 117,996,006,512.64/389,365.76
  6. Step 6: Final answer
    x = 303,046.69

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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.