Home / 258,040.35-387,060.12-169,272.72

Finding the Fourth Proportional to 258,040.35, 387,060.12 and 169,272.72

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Solution

The fourth proportional to 258,040.35, 387,060.12 and 169,272.72 is: 253,908.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,040.35 : 387,060.12 = 169,272.72 : x
  2. Step 2: Convert to fraction form
    258,040.35/387,060.12 = 169,272.72/x
  3. Step 3: Cross multiply
    258,040.35x = 387,060.12 × 169,272.72
  4. Step 4: Simplify right side
    258,040.35x = 65,518,719,315.93
  5. Step 5: Solve for x
    x = 65,518,719,315.93/258,040.35
  6. Step 6: Final answer
    x = 253,908.81

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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.