Home / 257,723.56-386,429.91-115,543.08

Finding the Fourth Proportional to 257,723.56, 386,429.91 and 115,543.08

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Solution

The fourth proportional to 257,723.56, 386,429.91 and 115,543.08 is: 173,244.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,723.56 : 386,429.91 = 115,543.08 : x
  2. Step 2: Convert to fraction form
    257,723.56/386,429.91 = 115,543.08/x
  3. Step 3: Cross multiply
    257,723.56x = 386,429.91 × 115,543.08
  4. Step 4: Simplify right side
    257,723.56x = 44,649,300,073.37
  5. Step 5: Solve for x
    x = 44,649,300,073.37/257,723.56
  6. Step 6: Final answer
    x = 173,244.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.