Home / 394,868.15-592,301.76-128,628.24

Finding the Fourth Proportional to 394,868.15, 592,301.76 and 128,628.24

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Solution

The fourth proportional to 394,868.15, 592,301.76 and 128,628.24 is: 192,942.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,868.15 : 592,301.76 = 128,628.24 : x
  2. Step 2: Convert to fraction form
    394,868.15/592,301.76 = 128,628.24/x
  3. Step 3: Cross multiply
    394,868.15x = 592,301.76 × 128,628.24
  4. Step 4: Simplify right side
    394,868.15x = 76,186,732,937.70
  5. Step 5: Solve for x
    x = 76,186,732,937.70/394,868.15
  6. Step 6: Final answer
    x = 192,942.21

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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.