Home / 258,334.04-387,508.40-71,345.54

Finding the Fourth Proportional to 258,334.04, 387,508.40 and 71,345.54

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Solution

The fourth proportional to 258,334.04, 387,508.40 and 71,345.54 is: 107,020.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,334.04 : 387,508.40 = 71,345.54 : x
  2. Step 2: Convert to fraction form
    258,334.04/387,508.40 = 71,345.54/x
  3. Step 3: Cross multiply
    258,334.04x = 387,508.40 × 71,345.54
  4. Step 4: Simplify right side
    258,334.04x = 27,646,995,695.81
  5. Step 5: Solve for x
    x = 27,646,995,695.81/258,334.04
  6. Step 6: Final answer
    x = 107,020.34

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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.