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Finding the Fourth Proportional to 316,465.70, 436,723.11 and 173,234.79

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Solution

The fourth proportional to 316,465.70, 436,723.11 and 173,234.79 is: 239,064.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,465.70 : 436,723.11 = 173,234.79 : x
  2. Step 2: Convert to fraction form
    316,465.70/436,723.11 = 173,234.79/x
  3. Step 3: Cross multiply
    316,465.70x = 436,723.11 × 173,234.79
  4. Step 4: Simplify right side
    316,465.70x = 75,655,636,249.00
  5. Step 5: Solve for x
    x = 75,655,636,249.00/316,465.70
  6. Step 6: Final answer
    x = 239,064.26

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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.