Home / 393,440.58-542,983.77-223,674.30

Finding the Fourth Proportional to 393,440.58, 542,983.77 and 223,674.30

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Solution

The fourth proportional to 393,440.58, 542,983.77 and 223,674.30 is: 308,690.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,440.58 : 542,983.77 = 223,674.30 : x
  2. Step 2: Convert to fraction form
    393,440.58/542,983.77 = 223,674.30/x
  3. Step 3: Cross multiply
    393,440.58x = 542,983.77 × 223,674.30
  4. Step 4: Simplify right side
    393,440.58x = 121,451,514,666.11
  5. Step 5: Solve for x
    x = 121,451,514,666.11/393,440.58
  6. Step 6: Final answer
    x = 308,690.87

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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.