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Finding the Fourth Proportional to 275,877.80, 413,816.70 and 163,903.40

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Solution

The fourth proportional to 275,877.80, 413,816.70 and 163,903.40 is: 245,855.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,877.80 : 413,816.70 = 163,903.40 : x
  2. Step 2: Convert to fraction form
    275,877.80/413,816.70 = 163,903.40/x
  3. Step 3: Cross multiply
    275,877.80x = 413,816.70 × 163,903.40
  4. Step 4: Simplify right side
    275,877.80x = 67,825,964,106.78
  5. Step 5: Solve for x
    x = 67,825,964,106.78/275,877.80
  6. Step 6: Final answer
    x = 245,855.10

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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.