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Finding the Fourth Proportional to 436,079.09, 654,118.65 and 136,583.12

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Solution

The fourth proportional to 436,079.09, 654,118.65 and 136,583.12 is: 204,874.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,079.09 : 654,118.65 = 136,583.12 : x
  2. Step 2: Convert to fraction form
    436,079.09/654,118.65 = 136,583.12/x
  3. Step 3: Cross multiply
    436,079.09x = 654,118.65 × 136,583.12
  4. Step 4: Simplify right side
    436,079.09x = 89,341,567,702.48
  5. Step 5: Solve for x
    x = 89,341,567,702.48/436,079.09
  6. Step 6: Final answer
    x = 204,874.69

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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.