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Finding the Fourth Proportional to 538,818.40, 809,102.40 and 362,108.80

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Solution

The fourth proportional to 538,818.40, 809,102.40 and 362,108.80 is: 543,751.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,818.40 : 809,102.40 = 362,108.80 : x
  2. Step 2: Convert to fraction form
    538,818.40/809,102.40 = 362,108.80/x
  3. Step 3: Cross multiply
    538,818.40x = 809,102.40 × 362,108.80
  4. Step 4: Simplify right side
    538,818.40x = 292,983,099,141.12
  5. Step 5: Solve for x
    x = 292,983,099,141.12/538,818.40
  6. Step 6: Final answer
    x = 543,751.10

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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.