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Finding the Fourth Proportional to 299,128.11, 448,595.09 and 99,394.86

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Solution

The fourth proportional to 299,128.11, 448,595.09 and 99,394.86 is: 149,060.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,128.11 : 448,595.09 = 99,394.86 : x
  2. Step 2: Convert to fraction form
    299,128.11/448,595.09 = 99,394.86/x
  3. Step 3: Cross multiply
    299,128.11x = 448,595.09 × 99,394.86
  4. Step 4: Simplify right side
    299,128.11x = 44,588,046,167.24
  5. Step 5: Solve for x
    x = 44,588,046,167.24/299,128.11
  6. Step 6: Final answer
    x = 149,060.03

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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.