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Finding the Fourth Proportional to 397,726.56, 548,862.72 and 218,878.56

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Solution

The fourth proportional to 397,726.56, 548,862.72 and 218,878.56 is: 302,052.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,726.56 : 548,862.72 = 218,878.56 : x
  2. Step 2: Convert to fraction form
    397,726.56/548,862.72 = 218,878.56/x
  3. Step 3: Cross multiply
    397,726.56x = 548,862.72 × 218,878.56
  4. Step 4: Simplify right side
    397,726.56x = 120,134,281,791.28
  5. Step 5: Solve for x
    x = 120,134,281,791.28/397,726.56
  6. Step 6: Final answer
    x = 302,052.45

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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.