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Finding the Fourth Proportional to 216,211.80, 324,317.70 and 156,768.60

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Solution

The fourth proportional to 216,211.80, 324,317.70 and 156,768.60 is: 235,152.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,211.80 : 324,317.70 = 156,768.60 : x
  2. Step 2: Convert to fraction form
    216,211.80/324,317.70 = 156,768.60/x
  3. Step 3: Cross multiply
    216,211.80x = 324,317.70 × 156,768.60
  4. Step 4: Simplify right side
    216,211.80x = 50,842,831,784.22
  5. Step 5: Solve for x
    x = 50,842,831,784.22/216,211.80
  6. Step 6: Final answer
    x = 235,152.90

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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.