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Finding the Fourth Proportional to 392,670.19, 588,859.80 and 139,883.50

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Solution

The fourth proportional to 392,670.19, 588,859.80 and 139,883.50 is: 209,773.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,670.19 : 588,859.80 = 139,883.50 : x
  2. Step 2: Convert to fraction form
    392,670.19/588,859.80 = 139,883.50/x
  3. Step 3: Cross multiply
    392,670.19x = 588,859.80 × 139,883.50
  4. Step 4: Simplify right side
    392,670.19x = 82,371,769,833.30
  5. Step 5: Solve for x
    x = 82,371,769,833.30/392,670.19
  6. Step 6: Final answer
    x = 209,773.42

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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.