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Finding the Fourth Proportional to 389,231.83, 536,662.69 and 320,079.63

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Solution

The fourth proportional to 389,231.83, 536,662.69 and 320,079.63 is: 441,317.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,231.83 : 536,662.69 = 320,079.63 : x
  2. Step 2: Convert to fraction form
    389,231.83/536,662.69 = 320,079.63/x
  3. Step 3: Cross multiply
    389,231.83x = 536,662.69 × 320,079.63
  4. Step 4: Simplify right side
    389,231.83x = 171,774,795,250.01
  5. Step 5: Solve for x
    x = 171,774,795,250.01/389,231.83
  6. Step 6: Final answer
    x = 441,317.44

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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.