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Finding the Fourth Proportional to 212,885.76, 319,394.92 and 63,126.84

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Solution

The fourth proportional to 212,885.76, 319,394.92 and 63,126.84 is: 94,709.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,885.76 : 319,394.92 = 63,126.84 : x
  2. Step 2: Convert to fraction form
    212,885.76/319,394.92 = 63,126.84/x
  3. Step 3: Cross multiply
    212,885.76x = 319,394.92 × 63,126.84
  4. Step 4: Simplify right side
    212,885.76x = 20,162,392,011.65
  5. Step 5: Solve for x
    x = 20,162,392,011.65/212,885.76
  6. Step 6: Final answer
    x = 94,709.91

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1.5x scale

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.