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Finding the Fourth Proportional to 397,907.67, 549,027.45 and 236,731.22

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Solution

The fourth proportional to 397,907.67, 549,027.45 and 236,731.22 is: 326,638.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,907.67 : 549,027.45 = 236,731.22 : x
  2. Step 2: Convert to fraction form
    397,907.67/549,027.45 = 236,731.22/x
  3. Step 3: Cross multiply
    397,907.67x = 549,027.45 × 236,731.22
  4. Step 4: Simplify right side
    397,907.67x = 129,971,935,306.85
  5. Step 5: Solve for x
    x = 129,971,935,306.85/397,907.67
  6. Step 6: Final answer
    x = 326,638.43

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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.