Home / 258,255.88-356,402.28-143,536.80

Finding the Fourth Proportional to 258,255.88, 356,402.28 and 143,536.80

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Solution

The fourth proportional to 258,255.88, 356,402.28 and 143,536.80 is: 198,085.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,255.88 : 356,402.28 = 143,536.80 : x
  2. Step 2: Convert to fraction form
    258,255.88/356,402.28 = 143,536.80/x
  3. Step 3: Cross multiply
    258,255.88x = 356,402.28 × 143,536.80
  4. Step 4: Simplify right side
    258,255.88x = 51,156,842,783.90
  5. Step 5: Solve for x
    x = 51,156,842,783.90/258,255.88
  6. Step 6: Final answer
    x = 198,085.88

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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.