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Finding the Fourth Proportional to 397,169.01, 548,357.16 and 305,124.36

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Solution

The fourth proportional to 397,169.01, 548,357.16 and 305,124.36 is: 421,274.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,169.01 : 548,357.16 = 305,124.36 : x
  2. Step 2: Convert to fraction form
    397,169.01/548,357.16 = 305,124.36/x
  3. Step 3: Cross multiply
    397,169.01x = 548,357.16 × 305,124.36
  4. Step 4: Simplify right side
    397,169.01x = 167,317,127,496.42
  5. Step 5: Solve for x
    x = 167,317,127,496.42/397,169.01
  6. Step 6: Final answer
    x = 421,274.38

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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.