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Finding the Fourth Proportional to 300,042.60, 448,970.40 and 221,310.60

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Solution

The fourth proportional to 300,042.60, 448,970.40 and 221,310.60 is: 331,159.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,042.60 : 448,970.40 = 221,310.60 : x
  2. Step 2: Convert to fraction form
    300,042.60/448,970.40 = 221,310.60/x
  3. Step 3: Cross multiply
    300,042.60x = 448,970.40 × 221,310.60
  4. Step 4: Simplify right side
    300,042.60x = 99,361,908,606.24
  5. Step 5: Solve for x
    x = 99,361,908,606.24/300,042.60
  6. Step 6: Final answer
    x = 331,159.34

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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.