Home / 258,393.07-356,612-143,683.15

Finding the Fourth Proportional to 258,393.07, 356,612 and 143,683.15

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Solution

The fourth proportional to 258,393.07, 356,612 and 143,683.15 is: 198,299.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,393.07 : 356,612 = 143,683.15 : x
  2. Step 2: Convert to fraction form
    258,393.07/356,612 = 143,683.15/x
  3. Step 3: Cross multiply
    258,393.07x = 356,612 × 143,683.15
  4. Step 4: Simplify right side
    258,393.07x = 51,239,135,487.80
  5. Step 5: Solve for x
    x = 51,239,135,487.80/258,393.07
  6. Step 6: Final answer
    x = 198,299.19

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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.