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Finding the Fourth Proportional to 212,227.50, 292,915.56 and 121,644.20

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Solution

The fourth proportional to 212,227.50, 292,915.56 and 121,644.20 is: 167,892.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,227.50 : 292,915.56 = 121,644.20 : x
  2. Step 2: Convert to fraction form
    212,227.50/292,915.56 = 121,644.20/x
  3. Step 3: Cross multiply
    212,227.50x = 292,915.56 × 121,644.20
  4. Step 4: Simplify right side
    212,227.50x = 35,631,477,499.17
  5. Step 5: Solve for x
    x = 35,631,477,499.17/212,227.50
  6. Step 6: Final answer
    x = 167,892.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.