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Finding the Fourth Proportional to 535,965.20, 803,947.80 and 161,988.20

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Solution

The fourth proportional to 535,965.20, 803,947.80 and 161,988.20 is: 242,982.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,965.20 : 803,947.80 = 161,988.20 : x
  2. Step 2: Convert to fraction form
    535,965.20/803,947.80 = 161,988.20/x
  3. Step 3: Cross multiply
    535,965.20x = 803,947.80 × 161,988.20
  4. Step 4: Simplify right side
    535,965.20x = 130,230,057,015.96
  5. Step 5: Solve for x
    x = 130,230,057,015.96/535,965.20
  6. Step 6: Final answer
    x = 242,982.30

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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.