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Finding the Fourth Proportional to 397,858.39, 549,051.59 and 216,575.53

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Solution

The fourth proportional to 397,858.39, 549,051.59 and 216,575.53 is: 298,878.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,858.39 : 549,051.59 = 216,575.53 : x
  2. Step 2: Convert to fraction form
    397,858.39/549,051.59 = 216,575.53/x
  3. Step 3: Cross multiply
    397,858.39x = 549,051.59 × 216,575.53
  4. Step 4: Simplify right side
    397,858.39x = 118,911,139,101.59
  5. Step 5: Solve for x
    x = 118,911,139,101.59/397,858.39
  6. Step 6: Final answer
    x = 298,878.05

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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.