Home / 398,319.13-549,685.86-228,553.25

Finding the Fourth Proportional to 398,319.13, 549,685.86 and 228,553.25

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Solution

The fourth proportional to 398,319.13, 549,685.86 and 228,553.25 is: 315,406.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,319.13 : 549,685.86 = 228,553.25 : x
  2. Step 2: Convert to fraction form
    398,319.13/549,685.86 = 228,553.25/x
  3. Step 3: Cross multiply
    398,319.13x = 549,685.86 × 228,553.25
  4. Step 4: Simplify right side
    398,319.13x = 125,632,489,782.05
  5. Step 5: Solve for x
    x = 125,632,489,782.05/398,319.13
  6. Step 6: Final answer
    x = 315,406.62

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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.