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Finding the Fourth Proportional to 400,681.72, 552,955.67 and 228,627.69

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Solution

The fourth proportional to 400,681.72, 552,955.67 and 228,627.69 is: 315,514.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,681.72 : 552,955.67 = 228,627.69 : x
  2. Step 2: Convert to fraction form
    400,681.72/552,955.67 = 228,627.69/x
  3. Step 3: Cross multiply
    400,681.72x = 552,955.67 × 228,627.69
  4. Step 4: Simplify right side
    400,681.72x = 126,420,977,743.75
  5. Step 5: Solve for x
    x = 126,420,977,743.75/400,681.72
  6. Step 6: Final answer
    x = 315,514.71

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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.