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Finding the Fourth Proportional to 258,956.13, 357,369.11 and 142,674.33

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Solution

The fourth proportional to 258,956.13, 357,369.11 and 142,674.33 is: 196,895.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,956.13 : 357,369.11 = 142,674.33 : x
  2. Step 2: Convert to fraction form
    258,956.13/357,369.11 = 142,674.33/x
  3. Step 3: Cross multiply
    258,956.13x = 357,369.11 × 142,674.33
  4. Step 4: Simplify right side
    258,956.13x = 50,987,398,331.95
  5. Step 5: Solve for x
    x = 50,987,398,331.95/258,956.13
  6. Step 6: Final answer
    x = 196,895.89

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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.