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Finding the Fourth Proportional to 545,640.20, 818,460.30 and 171,614.60

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Solution

The fourth proportional to 545,640.20, 818,460.30 and 171,614.60 is: 257,421.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,640.20 : 818,460.30 = 171,614.60 : x
  2. Step 2: Convert to fraction form
    545,640.20/818,460.30 = 171,614.60/x
  3. Step 3: Cross multiply
    545,640.20x = 818,460.30 × 171,614.60
  4. Step 4: Simplify right side
    545,640.20x = 140,459,737,000.38
  5. Step 5: Solve for x
    x = 140,459,737,000.38/545,640.20
  6. Step 6: Final answer
    x = 257,421.90

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1.5x scale

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.