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Finding the Fourth Proportional to 445,436.88, 668,266.82 and 129,893.82

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Solution

The fourth proportional to 445,436.88, 668,266.82 and 129,893.82 is: 194,873.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,436.88 : 668,266.82 = 129,893.82 : x
  2. Step 2: Convert to fraction form
    445,436.88/668,266.82 = 129,893.82/x
  3. Step 3: Cross multiply
    445,436.88x = 668,266.82 × 129,893.82
  4. Step 4: Simplify right side
    445,436.88x = 86,803,730,029.05
  5. Step 5: Solve for x
    x = 86,803,730,029.05/445,436.88
  6. Step 6: Final answer
    x = 194,873.24

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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.