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Finding the Fourth Proportional to 398,544.54, 549,987.75 and 217,256.22

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Solution

The fourth proportional to 398,544.54, 549,987.75 and 217,256.22 is: 299,811.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,544.54 : 549,987.75 = 217,256.22 : x
  2. Step 2: Convert to fraction form
    398,544.54/549,987.75 = 217,256.22/x
  3. Step 3: Cross multiply
    398,544.54x = 549,987.75 × 217,256.22
  4. Step 4: Simplify right side
    398,544.54x = 119,488,259,611.31
  5. Step 5: Solve for x
    x = 119,488,259,611.31/398,544.54
  6. Step 6: Final answer
    x = 299,811.56

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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.