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Finding the Fourth Proportional to 216,167.20, 324,639.60 and 157,069.60

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Solution

The fourth proportional to 216,167.20, 324,639.60 and 157,069.60 is: 235,886.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,167.20 : 324,639.60 = 157,069.60 : x
  2. Step 2: Convert to fraction form
    216,167.20/324,639.60 = 157,069.60/x
  3. Step 3: Cross multiply
    216,167.20x = 324,639.60 × 157,069.60
  4. Step 4: Simplify right side
    216,167.20x = 50,991,012,116.16
  5. Step 5: Solve for x
    x = 50,991,012,116.16/216,167.20
  6. Step 6: Final answer
    x = 235,886.91

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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.