Home / 212,915.08-319,318.11-63,120.34

Finding the Fourth Proportional to 212,915.08, 319,318.11 and 63,120.34

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Solution

The fourth proportional to 212,915.08, 319,318.11 and 63,120.34 is: 94,664.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,915.08 : 319,318.11 = 63,120.34 : x
  2. Step 2: Convert to fraction form
    212,915.08/319,318.11 = 63,120.34/x
  3. Step 3: Cross multiply
    212,915.08x = 319,318.11 × 63,120.34
  4. Step 4: Simplify right side
    212,915.08x = 20,155,467,671.36
  5. Step 5: Solve for x
    x = 20,155,467,671.36/212,915.08
  6. Step 6: Final answer
    x = 94,664.35

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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.