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Finding the Fourth Proportional to 400,659.89, 552,893.55 and 219,368.52

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Solution

The fourth proportional to 400,659.89, 552,893.55 and 219,368.52 is: 302,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,659.89 : 552,893.55 = 219,368.52 : x
  2. Step 2: Convert to fraction form
    400,659.89/552,893.55 = 219,368.52/x
  3. Step 3: Cross multiply
    400,659.89x = 552,893.55 × 219,368.52
  4. Step 4: Simplify right side
    400,659.89x = 121,287,438,958.41
  5. Step 5: Solve for x
    x = 121,287,438,958.41/400,659.89
  6. Step 6: Final answer
    x = 302,719.20

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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.