Home / 542,723.12-748,868.20-300,967.28

Finding the Fourth Proportional to 542,723.12, 748,868.20 and 300,967.28

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Solution

The fourth proportional to 542,723.12, 748,868.20 and 300,967.28 is: 415,285.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,723.12 : 748,868.20 = 300,967.28 : x
  2. Step 2: Convert to fraction form
    542,723.12/748,868.20 = 300,967.28/x
  3. Step 3: Cross multiply
    542,723.12x = 748,868.20 × 300,967.28
  4. Step 4: Simplify right side
    542,723.12x = 225,384,825,232.50
  5. Step 5: Solve for x
    x = 225,384,825,232.50/542,723.12
  6. Step 6: Final answer
    x = 415,285.10

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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.