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Finding the Fourth Proportional to 397,989.25, 549,235.01 and 216,711.11

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Solution

The fourth proportional to 397,989.25, 549,235.01 and 216,711.11 is: 299,066.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,989.25 : 549,235.01 = 216,711.11 : x
  2. Step 2: Convert to fraction form
    397,989.25/549,235.01 = 216,711.11/x
  3. Step 3: Cross multiply
    397,989.25x = 549,235.01 × 216,711.11
  4. Step 4: Simplify right side
    397,989.25x = 119,025,327,584.41
  5. Step 5: Solve for x
    x = 119,025,327,584.41/397,989.25
  6. Step 6: Final answer
    x = 299,066.69

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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.