Home / 258,210.90-356,321.57-143,496.68

Finding the Fourth Proportional to 258,210.90, 356,321.57 and 143,496.68

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Solution

The fourth proportional to 258,210.90, 356,321.57 and 143,496.68 is: 198,020.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,210.90 : 356,321.57 = 143,496.68 : x
  2. Step 2: Convert to fraction form
    258,210.90/356,321.57 = 143,496.68/x
  3. Step 3: Cross multiply
    258,210.90x = 356,321.57 × 143,496.68
  4. Step 4: Simplify right side
    258,210.90x = 51,130,959,808.30
  5. Step 5: Solve for x
    x = 51,130,959,808.30/258,210.90
  6. Step 6: Final answer
    x = 198,020.14

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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.