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Finding the Fourth Proportional to 397,325.75, 548,309.54 and 218,477.75

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Solution

The fourth proportional to 397,325.75, 548,309.54 and 218,477.75 is: 301,499.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,325.75 : 548,309.54 = 218,477.75 : x
  2. Step 2: Convert to fraction form
    397,325.75/548,309.54 = 218,477.75/x
  3. Step 3: Cross multiply
    397,325.75x = 548,309.54 × 218,477.75
  4. Step 4: Simplify right side
    397,325.75x = 119,793,434,602.74
  5. Step 5: Solve for x
    x = 119,793,434,602.74/397,325.75
  6. Step 6: Final answer
    x = 301,499.30

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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.