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Finding the Fourth Proportional to 317,997.85, 438,853.86 and 180,203.48

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Solution

The fourth proportional to 317,997.85, 438,853.86 and 180,203.48 is: 248,690.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,997.85 : 438,853.86 = 180,203.48 : x
  2. Step 2: Convert to fraction form
    317,997.85/438,853.86 = 180,203.48/x
  3. Step 3: Cross multiply
    317,997.85x = 438,853.86 × 180,203.48
  4. Step 4: Simplify right side
    317,997.85x = 79,082,991,882.42
  5. Step 5: Solve for x
    x = 79,082,991,882.42/317,997.85
  6. Step 6: Final answer
    x = 248,690.34

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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.