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Finding the Fourth Proportional to 340,804.20, 511,109.10 and 104,089.80

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Solution

The fourth proportional to 340,804.20, 511,109.10 and 104,089.80 is: 156,105.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,804.20 : 511,109.10 = 104,089.80 : x
  2. Step 2: Convert to fraction form
    340,804.20/511,109.10 = 104,089.80/x
  3. Step 3: Cross multiply
    340,804.20x = 511,109.10 × 104,089.80
  4. Step 4: Simplify right side
    340,804.20x = 53,201,243,997.18
  5. Step 5: Solve for x
    x = 53,201,243,997.18/340,804.20
  6. Step 6: Final answer
    x = 156,105.01

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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.