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Finding the Fourth Proportional to 400,651.85, 552,878.53 and 219,329.03

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Solution

The fourth proportional to 400,651.85, 552,878.53 and 219,329.03 is: 302,662.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,651.85 : 552,878.53 = 219,329.03 : x
  2. Step 2: Convert to fraction form
    400,651.85/552,878.53 = 219,329.03/x
  3. Step 3: Cross multiply
    400,651.85x = 552,878.53 × 219,329.03
  4. Step 4: Simplify right side
    400,651.85x = 121,262,312,526.60
  5. Step 5: Solve for x
    x = 121,262,312,526.60/400,651.85
  6. Step 6: Final answer
    x = 302,662.55

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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.