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Finding the Fourth Proportional to 386,028.36, 579,125.70 and 119,783.64

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Solution

The fourth proportional to 386,028.36, 579,125.70 and 119,783.64 is: 179,701.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,028.36 : 579,125.70 = 119,783.64 : x
  2. Step 2: Convert to fraction form
    386,028.36/579,125.70 = 119,783.64/x
  3. Step 3: Cross multiply
    386,028.36x = 579,125.70 × 119,783.64
  4. Step 4: Simplify right side
    386,028.36x = 69,369,784,363.55
  5. Step 5: Solve for x
    x = 69,369,784,363.55/386,028.36
  6. Step 6: Final answer
    x = 179,701.26

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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.