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Finding the Fourth Proportional to 286,431.84, 429,324.84 and 136,549.44

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Solution

The fourth proportional to 286,431.84, 429,324.84 and 136,549.44 is: 204,670.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,431.84 : 429,324.84 = 136,549.44 : x
  2. Step 2: Convert to fraction form
    286,431.84/429,324.84 = 136,549.44/x
  3. Step 3: Cross multiply
    286,431.84x = 429,324.84 × 136,549.44
  4. Step 4: Simplify right side
    286,431.84x = 58,624,066,480.09
  5. Step 5: Solve for x
    x = 58,624,066,480.09/286,431.84
  6. Step 6: Final answer
    x = 204,670.22

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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.