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Finding the Fourth Proportional to 214,526.60, 321,905.10 and 89,880.20

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Solution

The fourth proportional to 214,526.60, 321,905.10 and 89,880.20 is: 134,868.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,526.60 : 321,905.10 = 89,880.20 : x
  2. Step 2: Convert to fraction form
    214,526.60/321,905.10 = 89,880.20/x
  3. Step 3: Cross multiply
    214,526.60x = 321,905.10 × 89,880.20
  4. Step 4: Simplify right side
    214,526.60x = 28,932,894,769.02
  5. Step 5: Solve for x
    x = 28,932,894,769.02/214,526.60
  6. Step 6: Final answer
    x = 134,868.57

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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.