Home / 258,261.78-356,410.38-143,542.70

Finding the Fourth Proportional to 258,261.78, 356,410.38 and 143,542.70

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Solution

The fourth proportional to 258,261.78, 356,410.38 and 143,542.70 is: 198,094.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,261.78 : 356,410.38 = 143,542.70 : x
  2. Step 2: Convert to fraction form
    258,261.78/356,410.38 = 143,542.70/x
  3. Step 3: Cross multiply
    258,261.78x = 356,410.38 × 143,542.70
  4. Step 4: Simplify right side
    258,261.78x = 51,160,108,253.23
  5. Step 5: Solve for x
    x = 51,160,108,253.23/258,261.78
  6. Step 6: Final answer
    x = 198,094.00

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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.