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Finding the Fourth Proportional to 397,368.56, 548,365.56 and 216,080.60

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Solution

The fourth proportional to 397,368.56, 548,365.56 and 216,080.60 is: 298,189.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,368.56 : 548,365.56 = 216,080.60 : x
  2. Step 2: Convert to fraction form
    397,368.56/548,365.56 = 216,080.60/x
  3. Step 3: Cross multiply
    397,368.56x = 548,365.56 × 216,080.60
  4. Step 4: Simplify right side
    397,368.56x = 118,491,159,224.14
  5. Step 5: Solve for x
    x = 118,491,159,224.14/397,368.56
  6. Step 6: Final answer
    x = 298,189.57

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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.