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Finding the Fourth Proportional to 216,943.20, 325,414.80 and 153,957.60

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Solution

The fourth proportional to 216,943.20, 325,414.80 and 153,957.60 is: 230,936.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,943.20 : 325,414.80 = 153,957.60 : x
  2. Step 2: Convert to fraction form
    216,943.20/325,414.80 = 153,957.60/x
  3. Step 3: Cross multiply
    216,943.20x = 325,414.80 × 153,957.60
  4. Step 4: Simplify right side
    216,943.20x = 50,100,081,612.48
  5. Step 5: Solve for x
    x = 50,100,081,612.48/216,943.20
  6. Step 6: Final answer
    x = 230,936.40

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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.