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Finding the Fourth Proportional to 386,551.04, 579,684.40 and 133,766.64

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Solution

The fourth proportional to 386,551.04, 579,684.40 and 133,766.64 is: 200,600.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,551.04 : 579,684.40 = 133,766.64 : x
  2. Step 2: Convert to fraction form
    386,551.04/579,684.40 = 133,766.64/x
  3. Step 3: Cross multiply
    386,551.04x = 579,684.40 × 133,766.64
  4. Step 4: Simplify right side
    386,551.04x = 77,542,434,114.00
  5. Step 5: Solve for x
    x = 77,542,434,114.00/386,551.04
  6. Step 6: Final answer
    x = 200,600.77

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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.