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Finding the Fourth Proportional to 427,443, 589,820.28 and 236,430.42

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Solution

The fourth proportional to 427,443, 589,820.28 and 236,430.42 is: 326,245.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,443 : 589,820.28 = 236,430.42 : x
  2. Step 2: Convert to fraction form
    427,443/589,820.28 = 236,430.42/x
  3. Step 3: Cross multiply
    427,443x = 589,820.28 × 236,430.42
  4. Step 4: Simplify right side
    427,443x = 139,451,456,524.92
  5. Step 5: Solve for x
    x = 139,451,456,524.92/427,443
  6. Step 6: Final answer
    x = 326,245.74

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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.