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Finding the Fourth Proportional to 389,374.76, 537,336.42 and 219,608.36

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Solution

The fourth proportional to 389,374.76, 537,336.42 and 219,608.36 is: 303,059.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,374.76 : 537,336.42 = 219,608.36 : x
  2. Step 2: Convert to fraction form
    389,374.76/537,336.42 = 219,608.36/x
  3. Step 3: Cross multiply
    389,374.76x = 537,336.42 × 219,608.36
  4. Step 4: Simplify right side
    389,374.76x = 118,003,569,964.47
  5. Step 5: Solve for x
    x = 118,003,569,964.47/389,374.76
  6. Step 6: Final answer
    x = 303,059.11

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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.