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Finding the Fourth Proportional to 392,303.35, 588,399.13 and 126,029.42

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Solution

The fourth proportional to 392,303.35, 588,399.13 and 126,029.42 is: 189,026.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,303.35 : 588,399.13 = 126,029.42 : x
  2. Step 2: Convert to fraction form
    392,303.35/588,399.13 = 126,029.42/x
  3. Step 3: Cross multiply
    392,303.35x = 588,399.13 × 126,029.42
  4. Step 4: Simplify right side
    392,303.35x = 74,155,597,510.26
  5. Step 5: Solve for x
    x = 74,155,597,510.26/392,303.35
  6. Step 6: Final answer
    x = 189,026.17

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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.