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Finding the Fourth Proportional to 398,832.48, 550,380.08 and 219,984.48

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Solution

The fourth proportional to 398,832.48, 550,380.08 and 219,984.48 is: 303,573.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,832.48 : 550,380.08 = 219,984.48 : x
  2. Step 2: Convert to fraction form
    398,832.48/550,380.08 = 219,984.48/x
  3. Step 3: Cross multiply
    398,832.48x = 550,380.08 × 219,984.48
  4. Step 4: Simplify right side
    398,832.48x = 121,075,075,701.16
  5. Step 5: Solve for x
    x = 121,075,075,701.16/398,832.48
  6. Step 6: Final answer
    x = 303,573.76

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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.