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Finding the Fourth Proportional to 423,190.80, 634,129.92 and 245,256.48

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Solution

The fourth proportional to 423,190.80, 634,129.92 and 245,256.48 is: 367,504.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,190.80 : 634,129.92 = 245,256.48 : x
  2. Step 2: Convert to fraction form
    423,190.80/634,129.92 = 245,256.48/x
  3. Step 3: Cross multiply
    423,190.80x = 634,129.92 × 245,256.48
  4. Step 4: Simplify right side
    423,190.80x = 155,524,472,041.88
  5. Step 5: Solve for x
    x = 155,524,472,041.88/423,190.80
  6. Step 6: Final answer
    x = 367,504.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.