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Finding the Fourth Proportional to 259,380, 358,091.28 and 168,815.52

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Solution

The fourth proportional to 259,380, 358,091.28 and 168,815.52 is: 233,061.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,380 : 358,091.28 = 168,815.52 : x
  2. Step 2: Convert to fraction form
    259,380/358,091.28 = 168,815.52/x
  3. Step 3: Cross multiply
    259,380x = 358,091.28 × 168,815.52
  4. Step 4: Simplify right side
    259,380x = 60,451,365,640.67
  5. Step 5: Solve for x
    x = 60,451,365,640.67/259,380
  6. Step 6: Final answer
    x = 233,061.01

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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.