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Finding the Fourth Proportional to 545,694.40, 818,631.20 and 171,627.20

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Solution

The fourth proportional to 545,694.40, 818,631.20 and 171,627.20 is: 257,468.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,694.40 : 818,631.20 = 171,627.20 : x
  2. Step 2: Convert to fraction form
    545,694.40/818,631.20 = 171,627.20/x
  3. Step 3: Cross multiply
    545,694.40x = 818,631.20 × 171,627.20
  4. Step 4: Simplify right side
    545,694.40x = 140,499,380,688.64
  5. Step 5: Solve for x
    x = 140,499,380,688.64/545,694.40
  6. Step 6: Final answer
    x = 257,468.98

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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.