Home / 258,600.06-356,865.75-145,420.38

Finding the Fourth Proportional to 258,600.06, 356,865.75 and 145,420.38

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Solution

The fourth proportional to 258,600.06, 356,865.75 and 145,420.38 is: 200,678.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,600.06 : 356,865.75 = 145,420.38 : x
  2. Step 2: Convert to fraction form
    258,600.06/356,865.75 = 145,420.38/x
  3. Step 3: Cross multiply
    258,600.06x = 356,865.75 × 145,420.38
  4. Step 4: Simplify right side
    258,600.06x = 51,895,552,973.99
  5. Step 5: Solve for x
    x = 51,895,552,973.99/258,600.06
  6. Step 6: Final answer
    x = 200,678.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.