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Finding the Fourth Proportional to 212,912.58, 319,314.36 and 63,117.84

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Solution

The fourth proportional to 212,912.58, 319,314.36 and 63,117.84 is: 94,660.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,912.58 : 319,314.36 = 63,117.84 : x
  2. Step 2: Convert to fraction form
    212,912.58/319,314.36 = 63,117.84/x
  3. Step 3: Cross multiply
    212,912.58x = 319,314.36 × 63,117.84
  4. Step 4: Simplify right side
    212,912.58x = 20,154,432,684.18
  5. Step 5: Solve for x
    x = 20,154,432,684.18/212,912.58
  6. Step 6: Final answer
    x = 94,660.60

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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.