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Finding the Fourth Proportional to 260,335.69, 389,949.80 and 153,604.62

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Solution

The fourth proportional to 260,335.69, 389,949.80 and 153,604.62 is: 230,080.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,335.69 : 389,949.80 = 153,604.62 : x
  2. Step 2: Convert to fraction form
    260,335.69/389,949.80 = 153,604.62/x
  3. Step 3: Cross multiply
    260,335.69x = 389,949.80 × 153,604.62
  4. Step 4: Simplify right side
    260,335.69x = 59,898,090,080.05
  5. Step 5: Solve for x
    x = 59,898,090,080.05/260,335.69
  6. Step 6: Final answer
    x = 230,080.21

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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.