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Finding the Fourth Proportional to 316,448.70, 436,703.31 and 173,205.67

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Solution

The fourth proportional to 316,448.70, 436,703.31 and 173,205.67 is: 239,026.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,448.70 : 436,703.31 = 173,205.67 : x
  2. Step 2: Convert to fraction form
    316,448.70/436,703.31 = 173,205.67/x
  3. Step 3: Cross multiply
    316,448.70x = 436,703.31 × 173,205.67
  4. Step 4: Simplify right side
    316,448.70x = 75,639,486,350.22
  5. Step 5: Solve for x
    x = 75,639,486,350.22/316,448.70
  6. Step 6: Final answer
    x = 239,026.07

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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.