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Finding the Fourth Proportional to 214,361.60, 321,657.60 and 89,715.20

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Solution

The fourth proportional to 214,361.60, 321,657.60 and 89,715.20 is: 134,621.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,361.60 : 321,657.60 = 89,715.20 : x
  2. Step 2: Convert to fraction form
    214,361.60/321,657.60 = 89,715.20/x
  3. Step 3: Cross multiply
    214,361.60x = 321,657.60 × 89,715.20
  4. Step 4: Simplify right side
    214,361.60x = 28,857,575,915.52
  5. Step 5: Solve for x
    x = 28,857,575,915.52/214,361.60
  6. Step 6: Final answer
    x = 134,621.01

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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.