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Finding the Fourth Proportional to 202,487.80, 303,731.70 and 108,009.40

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Solution

The fourth proportional to 202,487.80, 303,731.70 and 108,009.40 is: 162,014.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,487.80 : 303,731.70 = 108,009.40 : x
  2. Step 2: Convert to fraction form
    202,487.80/303,731.70 = 108,009.40/x
  3. Step 3: Cross multiply
    202,487.80x = 303,731.70 × 108,009.40
  4. Step 4: Simplify right side
    202,487.80x = 32,805,878,677.98
  5. Step 5: Solve for x
    x = 32,805,878,677.98/202,487.80
  6. Step 6: Final answer
    x = 162,014.10

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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.