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Finding the Fourth Proportional to 275,485.90, 413,388.39 and 115,547.60

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Solution

The fourth proportional to 275,485.90, 413,388.39 and 115,547.60 is: 173,388.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,485.90 : 413,388.39 = 115,547.60 : x
  2. Step 2: Convert to fraction form
    275,485.90/413,388.39 = 115,547.60/x
  3. Step 3: Cross multiply
    275,485.90x = 413,388.39 × 115,547.60
  4. Step 4: Simplify right side
    275,485.90x = 47,766,036,332.36
  5. Step 5: Solve for x
    x = 47,766,036,332.36/275,485.90
  6. Step 6: Final answer
    x = 173,388.32

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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.