Home / 394,655.27-591,988.37-128,417.18

Finding the Fourth Proportional to 394,655.27, 591,988.37 and 128,417.18

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Solution

The fourth proportional to 394,655.27, 591,988.37 and 128,417.18 is: 192,627.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,655.27 : 591,988.37 = 128,417.18 : x
  2. Step 2: Convert to fraction form
    394,655.27/591,988.37 = 128,417.18/x
  3. Step 3: Cross multiply
    394,655.27x = 591,988.37 × 128,417.18
  4. Step 4: Simplify right side
    394,655.27x = 76,021,473,466.17
  5. Step 5: Solve for x
    x = 76,021,473,466.17/394,655.27
  6. Step 6: Final answer
    x = 192,627.54

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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.