Home / 393,257.19-542,741.00-223,516.83

Finding the Fourth Proportional to 393,257.19, 542,741.00 and 223,516.83

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Solution

The fourth proportional to 393,257.19, 542,741.00 and 223,516.83 is: 308,479.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,257.19 : 542,741.00 = 223,516.83 : x
  2. Step 2: Convert to fraction form
    393,257.19/542,741.00 = 223,516.83/x
  3. Step 3: Cross multiply
    393,257.19x = 542,741.00 × 223,516.83
  4. Step 4: Simplify right side
    393,257.19x = 121,311,746,713.45
  5. Step 5: Solve for x
    x = 121,311,746,713.45/393,257.19
  6. Step 6: Final answer
    x = 308,479.41

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Double scale
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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.