Home / 315,211.38-434,991.21-171,971.37

Finding the Fourth Proportional to 315,211.38, 434,991.21 and 171,971.37

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Solution

The fourth proportional to 315,211.38, 434,991.21 and 171,971.37 is: 237,320.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,211.38 : 434,991.21 = 171,971.37 : x
  2. Step 2: Convert to fraction form
    315,211.38/434,991.21 = 171,971.37/x
  3. Step 3: Cross multiply
    315,211.38x = 434,991.21 × 171,971.37
  4. Step 4: Simplify right side
    315,211.38x = 74,806,034,321.66
  5. Step 5: Solve for x
    x = 74,806,034,321.66/315,211.38
  6. Step 6: Final answer
    x = 237,320.22

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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.