Home / 258,440.04-387,667.35-71,451.54

Finding the Fourth Proportional to 258,440.04, 387,667.35 and 71,451.54

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Solution

The fourth proportional to 258,440.04, 387,667.35 and 71,451.54 is: 107,179.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,440.04 : 387,667.35 = 71,451.54 : x
  2. Step 2: Convert to fraction form
    258,440.04/387,667.35 = 71,451.54/x
  3. Step 3: Cross multiply
    258,440.04x = 387,667.35 × 71,451.54
  4. Step 4: Simplify right side
    258,440.04x = 27,699,429,165.22
  5. Step 5: Solve for x
    x = 27,699,429,165.22/258,440.04
  6. Step 6: Final answer
    x = 107,179.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.