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Finding the Fourth Proportional to 219,795.80, 330,422.70 and 190,927.40

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Solution

The fourth proportional to 219,795.80, 330,422.70 and 190,927.40 is: 287,024.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,795.80 : 330,422.70 = 190,927.40 : x
  2. Step 2: Convert to fraction form
    219,795.80/330,422.70 = 190,927.40/x
  3. Step 3: Cross multiply
    219,795.80x = 330,422.70 × 190,927.40
  4. Step 4: Simplify right side
    219,795.80x = 63,086,747,011.98
  5. Step 5: Solve for x
    x = 63,086,747,011.98/219,795.80
  6. Step 6: Final answer
    x = 287,024.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.