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Finding the Fourth Proportional to 275,155.60, 379,737.12 and 162,000.40

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Solution

The fourth proportional to 275,155.60, 379,737.12 and 162,000.40 is: 223,573.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,155.60 : 379,737.12 = 162,000.40 : x
  2. Step 2: Convert to fraction form
    275,155.60/379,737.12 = 162,000.40/x
  3. Step 3: Cross multiply
    275,155.60x = 379,737.12 × 162,000.40
  4. Step 4: Simplify right side
    275,155.60x = 61,517,565,334.85
  5. Step 5: Solve for x
    x = 61,517,565,334.85/275,155.60
  6. Step 6: Final answer
    x = 223,573.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.