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Finding the Fourth Proportional to 542,390.40, 748,448.43 and 300,652.41

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Solution

The fourth proportional to 542,390.40, 748,448.43 and 300,652.41 is: 414,872.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,390.40 : 748,448.43 = 300,652.41 : x
  2. Step 2: Convert to fraction form
    542,390.40/748,448.43 = 300,652.41/x
  3. Step 3: Cross multiply
    542,390.40x = 748,448.43 × 300,652.41
  4. Step 4: Simplify right side
    542,390.40x = 225,022,824,240.22
  5. Step 5: Solve for x
    x = 225,022,824,240.22/542,390.40
  6. Step 6: Final answer
    x = 414,872.43

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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.