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Finding the Fourth Proportional to 386,476.60, 579,958.10 and 164,857.40

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Solution

The fourth proportional to 386,476.60, 579,958.10 and 164,857.40 is: 247,389.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,476.60 : 579,958.10 = 164,857.40 : x
  2. Step 2: Convert to fraction form
    386,476.60/579,958.10 = 164,857.40/x
  3. Step 3: Cross multiply
    386,476.60x = 579,958.10 × 164,857.40
  4. Step 4: Simplify right side
    386,476.60x = 95,610,384,474.94
  5. Step 5: Solve for x
    x = 95,610,384,474.94/386,476.60
  6. Step 6: Final answer
    x = 247,389.84

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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.