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Finding the Fourth Proportional to 449,698.80, 620,573.76 and 245,740.80

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Solution

The fourth proportional to 449,698.80, 620,573.76 and 245,740.80 is: 339,116.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,698.80 : 620,573.76 = 245,740.80 : x
  2. Step 2: Convert to fraction form
    449,698.80/620,573.76 = 245,740.80/x
  3. Step 3: Cross multiply
    449,698.80x = 620,573.76 × 245,740.80
  4. Step 4: Simplify right side
    449,698.80x = 152,500,292,241.41
  5. Step 5: Solve for x
    x = 152,500,292,241.41/449,698.80
  6. Step 6: Final answer
    x = 339,116.52

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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.