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Finding the Fourth Proportional to 248,638.21, 373,218.21 and 220,356.11

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Solution

The fourth proportional to 248,638.21, 373,218.21 and 220,356.11 is: 330,765.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,638.21 : 373,218.21 = 220,356.11 : x
  2. Step 2: Convert to fraction form
    248,638.21/373,218.21 = 220,356.11/x
  3. Step 3: Cross multiply
    248,638.21x = 373,218.21 × 220,356.11
  4. Step 4: Simplify right side
    248,638.21x = 82,240,913,869.81
  5. Step 5: Solve for x
    x = 82,240,913,869.81/248,638.21
  6. Step 6: Final answer
    x = 330,765.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.