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Finding the Fourth Proportional to 258,391.68, 356,584.68 and 142,109.88

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Solution

The fourth proportional to 258,391.68, 356,584.68 and 142,109.88 is: 196,113.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,391.68 : 356,584.68 = 142,109.88 : x
  2. Step 2: Convert to fraction form
    258,391.68/356,584.68 = 142,109.88/x
  3. Step 3: Cross multiply
    258,391.68x = 356,584.68 × 142,109.88
  4. Step 4: Simplify right side
    258,391.68x = 50,674,206,084.64
  5. Step 5: Solve for x
    x = 50,674,206,084.64/258,391.68
  6. Step 6: Final answer
    x = 196,113.92

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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.