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Finding the Fourth Proportional to 397,361.04, 548,358.20 and 218,513.04

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Solution

The fourth proportional to 397,361.04, 548,358.20 and 218,513.04 is: 301,547.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,361.04 : 548,358.20 = 218,513.04 : x
  2. Step 2: Convert to fraction form
    397,361.04/548,358.20 = 218,513.04/x
  3. Step 3: Cross multiply
    397,361.04x = 548,358.20 × 218,513.04
  4. Step 4: Simplify right side
    397,361.04x = 119,823,417,290.93
  5. Step 5: Solve for x
    x = 119,823,417,290.93/397,361.04
  6. Step 6: Final answer
    x = 301,547.98

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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.