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Finding the Fourth Proportional to 542,574.80, 748,762.20 and 300,867.56

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Solution

The fourth proportional to 542,574.80, 748,762.20 and 300,867.56 is: 415,202.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,574.80 : 748,762.20 = 300,867.56 : x
  2. Step 2: Convert to fraction form
    542,574.80/748,762.20 = 300,867.56/x
  3. Step 3: Cross multiply
    542,574.80x = 748,762.20 × 300,867.56
  4. Step 4: Simplify right side
    542,574.80x = 225,278,256,134.23
  5. Step 5: Solve for x
    x = 225,278,256,134.23/542,574.80
  6. Step 6: Final answer
    x = 415,202.21

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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.