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Finding the Fourth Proportional to 443,513.64, 665,374.94 and 143,971.08

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Solution

The fourth proportional to 443,513.64, 665,374.94 and 143,971.08 is: 215,990.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,513.64 : 665,374.94 = 143,971.08 : x
  2. Step 2: Convert to fraction form
    443,513.64/665,374.94 = 143,971.08/x
  3. Step 3: Cross multiply
    443,513.64x = 665,374.94 × 143,971.08
  4. Step 4: Simplify right side
    443,513.64x = 95,794,748,716.74
  5. Step 5: Solve for x
    x = 95,794,748,716.74/443,513.64
  6. Step 6: Final answer
    x = 215,990.54

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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.