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Finding the Fourth Proportional to 339,357.20, 509,181.60 and 173,145.20

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Solution

The fourth proportional to 339,357.20, 509,181.60 and 173,145.20 is: 259,792.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,357.20 : 509,181.60 = 173,145.20 : x
  2. Step 2: Convert to fraction form
    339,357.20/509,181.60 = 173,145.20/x
  3. Step 3: Cross multiply
    339,357.20x = 509,181.60 × 173,145.20
  4. Step 4: Simplify right side
    339,357.20x = 88,162,349,968.32
  5. Step 5: Solve for x
    x = 88,162,349,968.32/339,357.20
  6. Step 6: Final answer
    x = 259,792.19

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1.5x scale

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.