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Finding the Fourth Proportional to 386,319.60, 579,479.40 and 365,583.60

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Solution

The fourth proportional to 386,319.60, 579,479.40 and 365,583.60 is: 548,375.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,319.60 : 579,479.40 = 365,583.60 : x
  2. Step 2: Convert to fraction form
    386,319.60/579,479.40 = 365,583.60/x
  3. Step 3: Cross multiply
    386,319.60x = 579,479.40 × 365,583.60
  4. Step 4: Simplify right side
    386,319.60x = 211,848,165,177.84
  5. Step 5: Solve for x
    x = 211,848,165,177.84/386,319.60
  6. Step 6: Final answer
    x = 548,375.40

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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.