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Finding the Fourth Proportional to 189,042.18, 284,859.60 and 156,492.60

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Solution

The fourth proportional to 189,042.18, 284,859.60 and 156,492.60 is: 235,812.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,042.18 : 284,859.60 = 156,492.60 : x
  2. Step 2: Convert to fraction form
    189,042.18/284,859.60 = 156,492.60/x
  3. Step 3: Cross multiply
    189,042.18x = 284,859.60 × 156,492.60
  4. Step 4: Simplify right side
    189,042.18x = 44,578,419,438.96
  5. Step 5: Solve for x
    x = 44,578,419,438.96/189,042.18
  6. Step 6: Final answer
    x = 235,812.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.