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Finding the Fourth Proportional to 216,540.80, 324,811.20 and 157,097.60

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Solution

The fourth proportional to 216,540.80, 324,811.20 and 157,097.60 is: 235,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,540.80 : 324,811.20 = 157,097.60 : x
  2. Step 2: Convert to fraction form
    216,540.80/324,811.20 = 157,097.60/x
  3. Step 3: Cross multiply
    216,540.80x = 324,811.20 × 157,097.60
  4. Step 4: Simplify right side
    216,540.80x = 51,027,059,973.12
  5. Step 5: Solve for x
    x = 51,027,059,973.12/216,540.80
  6. Step 6: Final answer
    x = 235,646.40

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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.