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Finding the Fourth Proportional to 291,898.64, 436,513.80 and 212,204.36

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Solution

The fourth proportional to 291,898.64, 436,513.80 and 212,204.36 is: 317,336.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,898.64 : 436,513.80 = 212,204.36 : x
  2. Step 2: Convert to fraction form
    291,898.64/436,513.80 = 212,204.36/x
  3. Step 3: Cross multiply
    291,898.64x = 436,513.80 × 212,204.36
  4. Step 4: Simplify right side
    291,898.64x = 92,630,131,560.17
  5. Step 5: Solve for x
    x = 92,630,131,560.17/291,898.64
  6. Step 6: Final answer
    x = 317,336.63

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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.