Home / 315,528.31-435,427.33-172,287.33

Finding the Fourth Proportional to 315,528.31, 435,427.33 and 172,287.33

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Solution

The fourth proportional to 315,528.31, 435,427.33 and 172,287.33 is: 237,755.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,528.31 : 435,427.33 = 172,287.33 : x
  2. Step 2: Convert to fraction form
    315,528.31/435,427.33 = 172,287.33/x
  3. Step 3: Cross multiply
    315,528.31x = 435,427.33 × 172,287.33
  4. Step 4: Simplify right side
    315,528.31x = 75,018,611,233.29
  5. Step 5: Solve for x
    x = 75,018,611,233.29/315,528.31
  6. Step 6: Final answer
    x = 237,755.57

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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.