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Finding the Fourth Proportional to 260,326.45, 390,621.11 and 118,081.06

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Solution

The fourth proportional to 260,326.45, 390,621.11 and 118,081.06 is: 177,181.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,326.45 : 390,621.11 = 118,081.06 : x
  2. Step 2: Convert to fraction form
    260,326.45/390,621.11 = 118,081.06/x
  3. Step 3: Cross multiply
    260,326.45x = 390,621.11 × 118,081.06
  4. Step 4: Simplify right side
    260,326.45x = 46,124,954,727.18
  5. Step 5: Solve for x
    x = 46,124,954,727.18/260,326.45
  6. Step 6: Final answer
    x = 177,181.21

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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.