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Finding the Fourth Proportional to 443,920.62, 612,201.91 and 290,903.24

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Solution

The fourth proportional to 443,920.62, 612,201.91 and 290,903.24 is: 401,178.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,920.62 : 612,201.91 = 290,903.24 : x
  2. Step 2: Convert to fraction form
    443,920.62/612,201.91 = 290,903.24/x
  3. Step 3: Cross multiply
    443,920.62x = 612,201.91 × 290,903.24
  4. Step 4: Simplify right side
    443,920.62x = 178,091,515,364.92
  5. Step 5: Solve for x
    x = 178,091,515,364.92/443,920.62
  6. Step 6: Final answer
    x = 401,178.74

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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.