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Finding the Fourth Proportional to 312,221.32, 430,866.02 and 168,982.60

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Solution

The fourth proportional to 312,221.32, 430,866.02 and 168,982.60 is: 233,196.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,221.32 : 430,866.02 = 168,982.60 : x
  2. Step 2: Convert to fraction form
    312,221.32/430,866.02 = 168,982.60/x
  3. Step 3: Cross multiply
    312,221.32x = 430,866.02 × 168,982.60
  4. Step 4: Simplify right side
    312,221.32x = 72,808,860,311.25
  5. Step 5: Solve for x
    x = 72,808,860,311.25/312,221.32
  6. Step 6: Final answer
    x = 233,196.31

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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.