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Finding the Fourth Proportional to 443,689.08, 612,399.78 and 252,815.28

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Solution

The fourth proportional to 443,689.08, 612,399.78 and 252,815.28 is: 348,947.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,689.08 : 612,399.78 = 252,815.28 : x
  2. Step 2: Convert to fraction form
    443,689.08/612,399.78 = 252,815.28/x
  3. Step 3: Cross multiply
    443,689.08x = 612,399.78 × 252,815.28
  4. Step 4: Simplify right side
    443,689.08x = 154,824,021,852.64
  5. Step 5: Solve for x
    x = 154,824,021,852.64/443,689.08
  6. Step 6: Final answer
    x = 348,947.11

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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.