Home / 258,214.28-387,320.63-68,674.48

Finding the Fourth Proportional to 258,214.28, 387,320.63 and 68,674.48

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Solution

The fourth proportional to 258,214.28, 387,320.63 and 68,674.48 is: 103,011.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,214.28 : 387,320.63 = 68,674.48 : x
  2. Step 2: Convert to fraction form
    258,214.28/387,320.63 = 68,674.48/x
  3. Step 3: Cross multiply
    258,214.28x = 387,320.63 × 68,674.48
  4. Step 4: Simplify right side
    258,214.28x = 26,599,041,546.85
  5. Step 5: Solve for x
    x = 26,599,041,546.85/258,214.28
  6. Step 6: Final answer
    x = 103,011.51

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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.