Home / 316,212.49-436,367.51-172,971.28

Finding the Fourth Proportional to 316,212.49, 436,367.51 and 172,971.28

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Solution

The fourth proportional to 316,212.49, 436,367.51 and 172,971.28 is: 238,697.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,212.49 : 436,367.51 = 172,971.28 : x
  2. Step 2: Convert to fraction form
    316,212.49/436,367.51 = 172,971.28/x
  3. Step 3: Cross multiply
    316,212.49x = 436,367.51 × 172,971.28
  4. Step 4: Simplify right side
    316,212.49x = 75,479,045,890.26
  5. Step 5: Solve for x
    x = 75,479,045,890.26/316,212.49
  6. Step 6: Final answer
    x = 238,697.23

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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.