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Finding the Fourth Proportional to 398,222.15, 549,546.32 and 219,374.15

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Solution

The fourth proportional to 398,222.15, 549,546.32 and 219,374.15 is: 302,736.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,222.15 : 549,546.32 = 219,374.15 : x
  2. Step 2: Convert to fraction form
    398,222.15/549,546.32 = 219,374.15/x
  3. Step 3: Cross multiply
    398,222.15x = 549,546.32 × 219,374.15
  4. Step 4: Simplify right side
    398,222.15x = 120,556,256,835.63
  5. Step 5: Solve for x
    x = 120,556,256,835.63/398,222.15
  6. Step 6: Final answer
    x = 302,736.19

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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.