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Finding the Fourth Proportional to 259,802.31, 389,907.60 and 133,437.45

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Solution

The fourth proportional to 259,802.31, 389,907.60 and 133,437.45 is: 200,261.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,802.31 : 389,907.60 = 133,437.45 : x
  2. Step 2: Convert to fraction form
    259,802.31/389,907.60 = 133,437.45/x
  3. Step 3: Cross multiply
    259,802.31x = 389,907.60 × 133,437.45
  4. Step 4: Simplify right side
    259,802.31x = 52,028,275,879.62
  5. Step 5: Solve for x
    x = 52,028,275,879.62/259,802.31
  6. Step 6: Final answer
    x = 200,261.02

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1.5x scale

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.