Home / 378,753.20-522,459.04-242,738.80

Finding the Fourth Proportional to 378,753.20, 522,459.04 and 242,738.80

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Solution

The fourth proportional to 378,753.20, 522,459.04 and 242,738.80 is: 334,838.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,753.20 : 522,459.04 = 242,738.80 : x
  2. Step 2: Convert to fraction form
    378,753.20/522,459.04 = 242,738.80/x
  3. Step 3: Cross multiply
    378,753.20x = 522,459.04 × 242,738.80
  4. Step 4: Simplify right side
    378,753.20x = 126,821,080,418.75
  5. Step 5: Solve for x
    x = 126,821,080,418.75/378,753.20
  6. Step 6: Final answer
    x = 334,838.31

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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.