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Finding the Fourth Proportional to 577,358.62, 866,086.39 and 212,719.50

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Solution

The fourth proportional to 577,358.62, 866,086.39 and 212,719.50 is: 319,097.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,358.62 : 866,086.39 = 212,719.50 : x
  2. Step 2: Convert to fraction form
    577,358.62/866,086.39 = 212,719.50/x
  3. Step 3: Cross multiply
    577,358.62x = 866,086.39 × 212,719.50
  4. Step 4: Simplify right side
    577,358.62x = 184,233,464,103.50
  5. Step 5: Solve for x
    x = 184,233,464,103.50/577,358.62
  6. Step 6: Final answer
    x = 319,097.11

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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.