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Finding the Fourth Proportional to 275,840.80, 413,761.20 and 163,866.40

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Solution

The fourth proportional to 275,840.80, 413,761.20 and 163,866.40 is: 245,799.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,840.80 : 413,761.20 = 163,866.40 : x
  2. Step 2: Convert to fraction form
    275,840.80/413,761.20 = 163,866.40/x
  3. Step 3: Cross multiply
    275,840.80x = 413,761.20 × 163,866.40
  4. Step 4: Simplify right side
    275,840.80x = 67,801,558,303.68
  5. Step 5: Solve for x
    x = 67,801,558,303.68/275,840.80
  6. Step 6: Final answer
    x = 245,799.60

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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.