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Finding the Fourth Proportional to 315,401.56, 435,189.18 and 181,239.64

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Solution

The fourth proportional to 315,401.56, 435,189.18 and 181,239.64 is: 250,073.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,401.56 : 435,189.18 = 181,239.64 : x
  2. Step 2: Convert to fraction form
    315,401.56/435,189.18 = 181,239.64/x
  3. Step 3: Cross multiply
    315,401.56x = 435,189.18 × 181,239.64
  4. Step 4: Simplify right side
    315,401.56x = 78,873,530,315.10
  5. Step 5: Solve for x
    x = 78,873,530,315.10/315,401.56
  6. Step 6: Final answer
    x = 250,073.37

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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.