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Finding the Fourth Proportional to 260,369.64, 390,606.71 and 110,608.74

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Solution

The fourth proportional to 260,369.64, 390,606.71 and 110,608.74 is: 165,935.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,369.64 : 390,606.71 = 110,608.74 : x
  2. Step 2: Convert to fraction form
    260,369.64/390,606.71 = 110,608.74/x
  3. Step 3: Cross multiply
    260,369.64x = 390,606.71 × 110,608.74
  4. Step 4: Simplify right side
    260,369.64x = 43,204,515,475.60
  5. Step 5: Solve for x
    x = 43,204,515,475.60/260,369.64
  6. Step 6: Final answer
    x = 165,935.30

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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.