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Finding the Fourth Proportional to 531,976.80, 798,001.20 and 216,439.20

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Solution

The fourth proportional to 531,976.80, 798,001.20 and 216,439.20 is: 324,673.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,976.80 : 798,001.20 = 216,439.20 : x
  2. Step 2: Convert to fraction form
    531,976.80/798,001.20 = 216,439.20/x
  3. Step 3: Cross multiply
    531,976.80x = 798,001.20 × 216,439.20
  4. Step 4: Simplify right side
    531,976.80x = 172,718,741,327.04
  5. Step 5: Solve for x
    x = 172,718,741,327.04/531,976.80
  6. Step 6: Final answer
    x = 324,673.45

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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.