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Finding the Fourth Proportional to 331,071.56, 456,879.12 and 185,857.16

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Solution

The fourth proportional to 331,071.56, 456,879.12 and 185,857.16 is: 256,483.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,071.56 : 456,879.12 = 185,857.16 : x
  2. Step 2: Convert to fraction form
    331,071.56/456,879.12 = 185,857.16/x
  3. Step 3: Cross multiply
    331,071.56x = 456,879.12 × 185,857.16
  4. Step 4: Simplify right side
    331,071.56x = 84,914,255,706.50
  5. Step 5: Solve for x
    x = 84,914,255,706.50/331,071.56
  6. Step 6: Final answer
    x = 256,483.09

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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.