Home / 397,789.79-549,007.77-223,379.57

Finding the Fourth Proportional to 397,789.79, 549,007.77 and 223,379.57

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Solution

The fourth proportional to 397,789.79, 549,007.77 and 223,379.57 is: 308,296.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,789.79 : 549,007.77 = 223,379.57 : x
  2. Step 2: Convert to fraction form
    397,789.79/549,007.77 = 223,379.57/x
  3. Step 3: Cross multiply
    397,789.79x = 549,007.77 × 223,379.57
  4. Step 4: Simplify right side
    397,789.79x = 122,637,121,799.45
  5. Step 5: Solve for x
    x = 122,637,121,799.45/397,789.79
  6. Step 6: Final answer
    x = 308,296.31

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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.