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Finding the Fourth Proportional to 295,893.29, 443,905.53 and 85,515.23

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Solution

The fourth proportional to 295,893.29, 443,905.53 and 85,515.23 is: 128,291.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,893.29 : 443,905.53 = 85,515.23 : x
  2. Step 2: Convert to fraction form
    295,893.29/443,905.53 = 85,515.23/x
  3. Step 3: Cross multiply
    295,893.29x = 443,905.53 × 85,515.23
  4. Step 4: Simplify right side
    295,893.29x = 37,960,681,276.69
  5. Step 5: Solve for x
    x = 37,960,681,276.69/295,893.29
  6. Step 6: Final answer
    x = 128,291.80

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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.