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Finding the Fourth Proportional to 407,369.22, 611,060.70 and 141,137.58

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Solution

The fourth proportional to 407,369.22, 611,060.70 and 141,137.58 is: 211,708.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,369.22 : 611,060.70 = 141,137.58 : x
  2. Step 2: Convert to fraction form
    407,369.22/611,060.70 = 141,137.58/x
  3. Step 3: Cross multiply
    407,369.22x = 611,060.70 × 141,137.58
  4. Step 4: Simplify right side
    407,369.22x = 86,243,628,431.11
  5. Step 5: Solve for x
    x = 86,243,628,431.11/407,369.22
  6. Step 6: Final answer
    x = 211,708.75

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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.