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Finding the Fourth Proportional to 397,698.96, 548,818.56 and 216,412.68

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Solution

The fourth proportional to 397,698.96, 548,818.56 and 216,412.68 is: 298,646.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,698.96 : 548,818.56 = 216,412.68 : x
  2. Step 2: Convert to fraction form
    397,698.96/548,818.56 = 216,412.68/x
  3. Step 3: Cross multiply
    397,698.96x = 548,818.56 × 216,412.68
  4. Step 4: Simplify right side
    397,698.96x = 118,771,295,403.34
  5. Step 5: Solve for x
    x = 118,771,295,403.34/397,698.96
  6. Step 6: Final answer
    x = 298,646.23

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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.