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Finding the Fourth Proportional to 263,147.30, 363,121.30 and 155,698.64

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Solution

The fourth proportional to 263,147.30, 363,121.30 and 155,698.64 is: 214,851.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,147.30 : 363,121.30 = 155,698.64 : x
  2. Step 2: Convert to fraction form
    263,147.30/363,121.30 = 155,698.64/x
  3. Step 3: Cross multiply
    263,147.30x = 363,121.30 × 155,698.64
  4. Step 4: Simplify right side
    263,147.30x = 56,537,492,565.03
  5. Step 5: Solve for x
    x = 56,537,492,565.03/263,147.30
  6. Step 6: Final answer
    x = 214,851.12

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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.