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Finding the Fourth Proportional to 397,679.90, 548,804.82 and 216,392.76

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Solution

The fourth proportional to 397,679.90, 548,804.82 and 216,392.76 is: 298,625.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,679.90 : 548,804.82 = 216,392.76 : x
  2. Step 2: Convert to fraction form
    397,679.90/548,804.82 = 216,392.76/x
  3. Step 3: Cross multiply
    397,679.90x = 548,804.82 × 216,392.76
  4. Step 4: Simplify right side
    397,679.90x = 118,757,389,701.10
  5. Step 5: Solve for x
    x = 118,757,389,701.10/397,679.90
  6. Step 6: Final answer
    x = 298,625.58

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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.