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Finding the Fourth Proportional to 336,957.84, 505,138.92 and 137,445.12

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Solution

The fourth proportional to 336,957.84, 505,138.92 and 137,445.12 is: 206,046.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,957.84 : 505,138.92 = 137,445.12 : x
  2. Step 2: Convert to fraction form
    336,957.84/505,138.92 = 137,445.12/x
  3. Step 3: Cross multiply
    336,957.84x = 505,138.92 × 137,445.12
  4. Step 4: Simplify right side
    336,957.84x = 69,428,879,476.07
  5. Step 5: Solve for x
    x = 69,428,879,476.07/336,957.84
  6. Step 6: Final answer
    x = 206,046.19

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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.