Home / 397,971.07-549,194.93-216,680.92

Finding the Fourth Proportional to 397,971.07, 549,194.93 and 216,680.92

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Solution

The fourth proportional to 397,971.07, 549,194.93 and 216,680.92 is: 299,016.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,971.07 : 549,194.93 = 216,680.92 : x
  2. Step 2: Convert to fraction form
    397,971.07/549,194.93 = 216,680.92/x
  3. Step 3: Cross multiply
    397,971.07x = 549,194.93 × 216,680.92
  4. Step 4: Simplify right side
    397,971.07x = 119,000,061,608.33
  5. Step 5: Solve for x
    x = 119,000,061,608.33/397,971.07
  6. Step 6: Final answer
    x = 299,016.86

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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.