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Finding the Fourth Proportional to 313,636.54, 432,820.50 and 170,396.55

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Solution

The fourth proportional to 313,636.54, 432,820.50 and 170,396.55 is: 235,148.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,636.54 : 432,820.50 = 170,396.55 : x
  2. Step 2: Convert to fraction form
    313,636.54/432,820.50 = 170,396.55/x
  3. Step 3: Cross multiply
    313,636.54x = 432,820.50 × 170,396.55
  4. Step 4: Simplify right side
    313,636.54x = 73,751,119,969.28
  5. Step 5: Solve for x
    x = 73,751,119,969.28/313,636.54
  6. Step 6: Final answer
    x = 235,148.37

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1.5x scale

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.