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Finding the Fourth Proportional to 312,051.20, 467,539.20 and 145,497.60

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Solution

The fourth proportional to 312,051.20, 467,539.20 and 145,497.60 is: 217,995.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,051.20 : 467,539.20 = 145,497.60 : x
  2. Step 2: Convert to fraction form
    312,051.20/467,539.20 = 145,497.60/x
  3. Step 3: Cross multiply
    312,051.20x = 467,539.20 × 145,497.60
  4. Step 4: Simplify right side
    312,051.20x = 68,025,831,505.92
  5. Step 5: Solve for x
    x = 68,025,831,505.92/312,051.20
  6. Step 6: Final answer
    x = 217,995.74

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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.