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Finding the Fourth Proportional to 443,353.74, 665,124 and 143,810.88

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Solution

The fourth proportional to 443,353.74, 665,124 and 143,810.88 is: 215,746.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,353.74 : 665,124 = 143,810.88 : x
  2. Step 2: Convert to fraction form
    443,353.74/665,124 = 143,810.88/x
  3. Step 3: Cross multiply
    443,353.74x = 665,124 × 143,810.88
  4. Step 4: Simplify right side
    443,353.74x = 95,652,067,749.12
  5. Step 5: Solve for x
    x = 95,652,067,749.12/443,353.74
  6. Step 6: Final answer
    x = 215,746.61

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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.