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Finding the Fourth Proportional to 443,669.10, 665,237.64 and 203,482.20

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Solution

The fourth proportional to 443,669.10, 665,237.64 and 203,482.20 is: 305,101.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,669.10 : 665,237.64 = 203,482.20 : x
  2. Step 2: Convert to fraction form
    443,669.10/665,237.64 = 203,482.20/x
  3. Step 3: Cross multiply
    443,669.10x = 665,237.64 × 203,482.20
  4. Step 4: Simplify right side
    443,669.10x = 135,364,018,179.85
  5. Step 5: Solve for x
    x = 135,364,018,179.85/443,669.10
  6. Step 6: Final answer
    x = 305,101.30

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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.