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Finding the Fourth Proportional to 397,840.67, 549,066.97 and 223,439.57

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Solution

The fourth proportional to 397,840.67, 549,066.97 and 223,439.57 is: 308,372.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,840.67 : 549,066.97 = 223,439.57 : x
  2. Step 2: Convert to fraction form
    397,840.67/549,066.97 = 223,439.57/x
  3. Step 3: Cross multiply
    397,840.67x = 549,066.97 × 223,439.57
  4. Step 4: Simplify right side
    397,840.67x = 122,683,287,678.00
  5. Step 5: Solve for x
    x = 122,683,287,678.00/397,840.67
  6. Step 6: Final answer
    x = 308,372.92

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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.