Home / 258,239.82-386,526.45-133,409.10

Finding the Fourth Proportional to 258,239.82, 386,526.45 and 133,409.10

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Solution

The fourth proportional to 258,239.82, 386,526.45 and 133,409.10 is: 199,683.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,239.82 : 386,526.45 = 133,409.10 : x
  2. Step 2: Convert to fraction form
    258,239.82/386,526.45 = 133,409.10/x
  3. Step 3: Cross multiply
    258,239.82x = 386,526.45 × 133,409.10
  4. Step 4: Simplify right side
    258,239.82x = 51,566,145,820.70
  5. Step 5: Solve for x
    x = 51,566,145,820.70/258,239.82
  6. Step 6: Final answer
    x = 199,683.17

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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.