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Finding the Fourth Proportional to 316,285.40, 436,474.91 and 173,045

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Solution

The fourth proportional to 316,285.40, 436,474.91 and 173,045 is: 238,802.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,285.40 : 436,474.91 = 173,045 : x
  2. Step 2: Convert to fraction form
    316,285.40/436,474.91 = 173,045/x
  3. Step 3: Cross multiply
    316,285.40x = 436,474.91 × 173,045
  4. Step 4: Simplify right side
    316,285.40x = 75,529,800,800.95
  5. Step 5: Solve for x
    x = 75,529,800,800.95/316,285.40
  6. Step 6: Final answer
    x = 238,802.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.