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Finding the Fourth Proportional to 188,688.65, 260,763.93 and 154,643.44

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Solution

The fourth proportional to 188,688.65, 260,763.93 and 154,643.44 is: 213,714.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,688.65 : 260,763.93 = 154,643.44 : x
  2. Step 2: Convert to fraction form
    188,688.65/260,763.93 = 154,643.44/x
  3. Step 3: Cross multiply
    188,688.65x = 260,763.93 × 154,643.44
  4. Step 4: Simplify right side
    188,688.65x = 40,325,431,163.12
  5. Step 5: Solve for x
    x = 40,325,431,163.12/188,688.65
  6. Step 6: Final answer
    x = 213,714.13

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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.