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Finding the Fourth Proportional to 312,230.64, 430,878.27 and 168,991.86

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Solution

The fourth proportional to 312,230.64, 430,878.27 and 168,991.86 is: 233,208.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,230.64 : 430,878.27 = 168,991.86 : x
  2. Step 2: Convert to fraction form
    312,230.64/430,878.27 = 168,991.86/x
  3. Step 3: Cross multiply
    312,230.64x = 430,878.27 × 168,991.86
  4. Step 4: Simplify right side
    312,230.64x = 72,814,920,280.88
  5. Step 5: Solve for x
    x = 72,814,920,280.88/312,230.64
  6. Step 6: Final answer
    x = 233,208.76

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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.