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Finding the Fourth Proportional to 212,007, 318,011.04 and 64,263

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Solution

The fourth proportional to 212,007, 318,011.04 and 64,263 is: 96,394.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,007 : 318,011.04 = 64,263 : x
  2. Step 2: Convert to fraction form
    212,007/318,011.04 = 64,263/x
  3. Step 3: Cross multiply
    212,007x = 318,011.04 × 64,263
  4. Step 4: Simplify right side
    212,007x = 20,436,343,463.52
  5. Step 5: Solve for x
    x = 20,436,343,463.52/212,007
  6. Step 6: Final answer
    x = 96,394.66

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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.