Home / 258,271.56-387,429.66-71,283.06

Finding the Fourth Proportional to 258,271.56, 387,429.66 and 71,283.06

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Solution

The fourth proportional to 258,271.56, 387,429.66 and 71,283.06 is: 106,930.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,271.56 : 387,429.66 = 71,283.06 : x
  2. Step 2: Convert to fraction form
    258,271.56/387,429.66 = 71,283.06/x
  3. Step 3: Cross multiply
    258,271.56x = 387,429.66 × 71,283.06
  4. Step 4: Simplify right side
    258,271.56x = 27,617,171,699.56
  5. Step 5: Solve for x
    x = 27,617,171,699.56/258,271.56
  6. Step 6: Final answer
    x = 106,930.75

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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.