Home / 258,633.29-387,445.62-145,972.73

Finding the Fourth Proportional to 258,633.29, 387,445.62 and 145,972.73

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Solution

The fourth proportional to 258,633.29, 387,445.62 and 145,972.73 is: 218,674.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,633.29 : 387,445.62 = 145,972.73 : x
  2. Step 2: Convert to fraction form
    258,633.29/387,445.62 = 145,972.73/x
  3. Step 3: Cross multiply
    258,633.29x = 387,445.62 × 145,972.73
  4. Step 4: Simplify right side
    258,633.29x = 56,556,494,877.94
  5. Step 5: Solve for x
    x = 56,556,494,877.94/258,633.29
  6. Step 6: Final answer
    x = 218,674.46

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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.