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Finding the Fourth Proportional to 397,854.81, 549,110.79 and 254,609.94

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Solution

The fourth proportional to 397,854.81, 549,110.79 and 254,609.94 is: 351,407.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,854.81 : 549,110.79 = 254,609.94 : x
  2. Step 2: Convert to fraction form
    397,854.81/549,110.79 = 254,609.94/x
  3. Step 3: Cross multiply
    397,854.81x = 549,110.79 × 254,609.94
  4. Step 4: Simplify right side
    397,854.81x = 139,809,065,295.25
  5. Step 5: Solve for x
    x = 139,809,065,295.25/397,854.81
  6. Step 6: Final answer
    x = 351,407.25

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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.