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Finding the Fourth Proportional to 216,955.20, 325,432.80 and 153,969.60

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Solution

The fourth proportional to 216,955.20, 325,432.80 and 153,969.60 is: 230,954.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,955.20 : 325,432.80 = 153,969.60 : x
  2. Step 2: Convert to fraction form
    216,955.20/325,432.80 = 153,969.60/x
  3. Step 3: Cross multiply
    216,955.20x = 325,432.80 × 153,969.60
  4. Step 4: Simplify right side
    216,955.20x = 50,106,758,042.88
  5. Step 5: Solve for x
    x = 50,106,758,042.88/216,955.20
  6. Step 6: Final answer
    x = 230,954.40

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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.