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Finding the Fourth Proportional to 542,134.82, 748,150.45 and 300,421.43

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Solution

The fourth proportional to 542,134.82, 748,150.45 and 300,421.43 is: 414,584.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,134.82 : 748,150.45 = 300,421.43 : x
  2. Step 2: Convert to fraction form
    542,134.82/748,150.45 = 300,421.43/x
  3. Step 3: Cross multiply
    542,134.82x = 748,150.45 × 300,421.43
  4. Step 4: Simplify right side
    542,134.82x = 224,760,432,256.12
  5. Step 5: Solve for x
    x = 224,760,432,256.12/542,134.82
  6. Step 6: Final answer
    x = 414,584.02

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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.