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Finding the Fourth Proportional to 397,598.67, 548,645.21 and 236,422.58

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Solution

The fourth proportional to 397,598.67, 548,645.21 and 236,422.58 is: 326,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,598.67 : 548,645.21 = 236,422.58 : x
  2. Step 2: Convert to fraction form
    397,598.67/548,645.21 = 236,422.58/x
  3. Step 3: Cross multiply
    397,598.67x = 548,645.21 × 236,422.58
  4. Step 4: Simplify right side
    397,598.67x = 129,712,113,499.12
  5. Step 5: Solve for x
    x = 129,712,113,499.12/397,598.67
  6. Step 6: Final answer
    x = 326,238.80

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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.