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Finding the Fourth Proportional to 476,676.36, 715,013.64 and 121,690.26

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Solution

The fourth proportional to 476,676.36, 715,013.64 and 121,690.26 is: 182,535.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,676.36 : 715,013.64 = 121,690.26 : x
  2. Step 2: Convert to fraction form
    476,676.36/715,013.64 = 121,690.26/x
  3. Step 3: Cross multiply
    476,676.36x = 715,013.64 × 121,690.26
  4. Step 4: Simplify right side
    476,676.36x = 87,010,195,755.15
  5. Step 5: Solve for x
    x = 87,010,195,755.15/476,676.36
  6. Step 6: Final answer
    x = 182,535.16

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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.