Home / 394,946.36-592,461.26-128,727.72

Finding the Fourth Proportional to 394,946.36, 592,461.26 and 128,727.72

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Solution

The fourth proportional to 394,946.36, 592,461.26 and 128,727.72 is: 193,105.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,946.36 : 592,461.26 = 128,727.72 : x
  2. Step 2: Convert to fraction form
    394,946.36/592,461.26 = 128,727.72/x
  3. Step 3: Cross multiply
    394,946.36x = 592,461.26 × 128,727.72
  4. Step 4: Simplify right side
    394,946.36x = 76,266,187,188.13
  5. Step 5: Solve for x
    x = 76,266,187,188.13/394,946.36
  6. Step 6: Final answer
    x = 193,105.18

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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.