Home / 258,418.32-356,646.84-143,708.40

Finding the Fourth Proportional to 258,418.32, 356,646.84 and 143,708.40

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Solution

The fourth proportional to 258,418.32, 356,646.84 and 143,708.40 is: 198,334.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,418.32 : 356,646.84 = 143,708.40 : x
  2. Step 2: Convert to fraction form
    258,418.32/356,646.84 = 143,708.40/x
  3. Step 3: Cross multiply
    258,418.32x = 356,646.84 × 143,708.40
  4. Step 4: Simplify right side
    258,418.32x = 51,253,146,741.46
  5. Step 5: Solve for x
    x = 51,253,146,741.46/258,418.32
  6. Step 6: Final answer
    x = 198,334.03

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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.