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Finding the Fourth Proportional to 275,124.86, 412,746.68 and 85,581.62

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Solution

The fourth proportional to 275,124.86, 412,746.68 and 85,581.62 is: 128,390.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,124.86 : 412,746.68 = 85,581.62 : x
  2. Step 2: Convert to fraction form
    275,124.86/412,746.68 = 85,581.62/x
  3. Step 3: Cross multiply
    275,124.86x = 412,746.68 × 85,581.62
  4. Step 4: Simplify right side
    275,124.86x = 35,323,529,524.02
  5. Step 5: Solve for x
    x = 35,323,529,524.02/275,124.86
  6. Step 6: Final answer
    x = 128,390.90

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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.