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Finding the Fourth Proportional to 398,096.44, 549,364.88 and 216,811.55

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Solution

The fourth proportional to 398,096.44, 549,364.88 and 216,811.55 is: 299,195.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,096.44 : 549,364.88 = 216,811.55 : x
  2. Step 2: Convert to fraction form
    398,096.44/549,364.88 = 216,811.55/x
  3. Step 3: Cross multiply
    398,096.44x = 549,364.88 × 216,811.55
  4. Step 4: Simplify right side
    398,096.44x = 119,108,653,063.81
  5. Step 5: Solve for x
    x = 119,108,653,063.81/398,096.44
  6. Step 6: Final answer
    x = 299,195.48

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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.