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Finding the Fourth Proportional to 320,653.45, 480,914.56 and 110,307.79

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Solution

The fourth proportional to 320,653.45, 480,914.56 and 110,307.79 is: 165,439.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,653.45 : 480,914.56 = 110,307.79 : x
  2. Step 2: Convert to fraction form
    320,653.45/480,914.56 = 110,307.79/x
  3. Step 3: Cross multiply
    320,653.45x = 480,914.56 × 110,307.79
  4. Step 4: Simplify right side
    320,653.45x = 53,048,622,292.42
  5. Step 5: Solve for x
    x = 53,048,622,292.42/320,653.45
  6. Step 6: Final answer
    x = 165,439.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.