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Finding the Fourth Proportional to 400,607.88, 552,822.22 and 219,315.30

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Solution

The fourth proportional to 400,607.88, 552,822.22 and 219,315.30 is: 302,645.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,607.88 : 552,822.22 = 219,315.30 : x
  2. Step 2: Convert to fraction form
    400,607.88/552,822.22 = 219,315.30/x
  3. Step 3: Cross multiply
    400,607.88x = 552,822.22 × 219,315.30
  4. Step 4: Simplify right side
    400,607.88x = 121,242,367,993.38
  5. Step 5: Solve for x
    x = 121,242,367,993.38/400,607.88
  6. Step 6: Final answer
    x = 302,645.99

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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.