Home / 259,766.31-389,305.01-133,401.45

Finding the Fourth Proportional to 259,766.31, 389,305.01 and 133,401.45

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Solution

The fourth proportional to 259,766.31, 389,305.01 and 133,401.45 is: 199,925.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,766.31 : 389,305.01 = 133,401.45 : x
  2. Step 2: Convert to fraction form
    259,766.31/389,305.01 = 133,401.45/x
  3. Step 3: Cross multiply
    259,766.31x = 389,305.01 × 133,401.45
  4. Step 4: Simplify right side
    259,766.31x = 51,933,852,159.26
  5. Step 5: Solve for x
    x = 51,933,852,159.26/259,766.31
  6. Step 6: Final answer
    x = 199,925.28

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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.