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Finding the Fourth Proportional to 260,537.40, 390,951.90 and 110,752.20

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Solution

The fourth proportional to 260,537.40, 390,951.90 and 110,752.20 is: 166,190.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,537.40 : 390,951.90 = 110,752.20 : x
  2. Step 2: Convert to fraction form
    260,537.40/390,951.90 = 110,752.20/x
  3. Step 3: Cross multiply
    260,537.40x = 390,951.90 × 110,752.20
  4. Step 4: Simplify right side
    260,537.40x = 43,298,783,019.18
  5. Step 5: Solve for x
    x = 43,298,783,019.18/260,537.40
  6. Step 6: Final answer
    x = 166,190.28

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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.