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Finding the Fourth Proportional to 397,296.32, 548,279.34 and 216,020.48

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Solution

The fourth proportional to 397,296.32, 548,279.34 and 216,020.48 is: 298,113.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,296.32 : 548,279.34 = 216,020.48 : x
  2. Step 2: Convert to fraction form
    397,296.32/548,279.34 = 216,020.48/x
  3. Step 3: Cross multiply
    397,296.32x = 548,279.34 × 216,020.48
  4. Step 4: Simplify right side
    397,296.32x = 118,439,566,200.88
  5. Step 5: Solve for x
    x = 118,439,566,200.88/397,296.32
  6. Step 6: Final answer
    x = 298,113.93

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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.