Home / 315,619.57-435,554.31-172,379.62

Finding the Fourth Proportional to 315,619.57, 435,554.31 and 172,379.62

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Solution

The fourth proportional to 315,619.57, 435,554.31 and 172,379.62 is: 237,883.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,619.57 : 435,554.31 = 172,379.62 : x
  2. Step 2: Convert to fraction form
    315,619.57/435,554.31 = 172,379.62/x
  3. Step 3: Cross multiply
    315,619.57x = 435,554.31 × 172,379.62
  4. Step 4: Simplify right side
    315,619.57x = 75,080,687,638.03
  5. Step 5: Solve for x
    x = 75,080,687,638.03/315,619.57
  6. Step 6: Final answer
    x = 237,883.50

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1.5x scale

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.