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Finding the Fourth Proportional to 343,630.53, 515,695.55 and 259,494.75

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Solution

The fourth proportional to 343,630.53, 515,695.55 and 259,494.75 is: 389,430.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,630.53 : 515,695.55 = 259,494.75 : x
  2. Step 2: Convert to fraction form
    343,630.53/515,695.55 = 259,494.75/x
  3. Step 3: Cross multiply
    343,630.53x = 515,695.55 × 259,494.75
  4. Step 4: Simplify right side
    343,630.53x = 133,820,286,525.89
  5. Step 5: Solve for x
    x = 133,820,286,525.89/343,630.53
  6. Step 6: Final answer
    x = 389,430.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.