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Finding the Fourth Proportional to 392,127, 588,190.50 and 96,639

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Solution

The fourth proportional to 392,127, 588,190.50 and 96,639 is: 144,958.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,127 : 588,190.50 = 96,639 : x
  2. Step 2: Convert to fraction form
    392,127/588,190.50 = 96,639/x
  3. Step 3: Cross multiply
    392,127x = 588,190.50 × 96,639
  4. Step 4: Simplify right side
    392,127x = 56,842,141,729.50
  5. Step 5: Solve for x
    x = 56,842,141,729.50/392,127
  6. Step 6: Final answer
    x = 144,958.50

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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.