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Finding the Fourth Proportional to 317,525.21, 438,168.79 and 188,469.32

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Solution

The fourth proportional to 317,525.21, 438,168.79 and 188,469.32 is: 260,078.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,525.21 : 438,168.79 = 188,469.32 : x
  2. Step 2: Convert to fraction form
    317,525.21/438,168.79 = 188,469.32/x
  3. Step 3: Cross multiply
    317,525.21x = 438,168.79 × 188,469.32
  4. Step 4: Simplify right side
    317,525.21x = 82,581,371,234.51
  5. Step 5: Solve for x
    x = 82,581,371,234.51/317,525.21
  6. Step 6: Final answer
    x = 260,078.16

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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.