Home / 258,147.81-356,248.26-143,436.69

Finding the Fourth Proportional to 258,147.81, 356,248.26 and 143,436.69

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Solution

The fourth proportional to 258,147.81, 356,248.26 and 143,436.69 is: 197,945.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,147.81 : 356,248.26 = 143,436.69 : x
  2. Step 2: Convert to fraction form
    258,147.81/356,248.26 = 143,436.69/x
  3. Step 3: Cross multiply
    258,147.81x = 356,248.26 × 143,436.69
  4. Step 4: Simplify right side
    258,147.81x = 51,099,071,232.66
  5. Step 5: Solve for x
    x = 51,099,071,232.66/258,147.81
  6. Step 6: Final answer
    x = 197,945.01

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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.