Home / 258,288.92-356,436.40-143,564.64

Finding the Fourth Proportional to 258,288.92, 356,436.40 and 143,564.64

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Solution

The fourth proportional to 258,288.92, 356,436.40 and 143,564.64 is: 198,117.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,288.92 : 356,436.40 = 143,564.64 : x
  2. Step 2: Convert to fraction form
    258,288.92/356,436.40 = 143,564.64/x
  3. Step 3: Cross multiply
    258,288.92x = 356,436.40 × 143,564.64
  4. Step 4: Simplify right side
    258,288.92x = 51,171,663,448.90
  5. Step 5: Solve for x
    x = 51,171,663,448.90/258,288.92
  6. Step 6: Final answer
    x = 198,117.92

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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.