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Finding the Fourth Proportional to 422,602.62, 633,903.93 and 256,040.70

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Solution

The fourth proportional to 422,602.62, 633,903.93 and 256,040.70 is: 384,061.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,602.62 : 633,903.93 = 256,040.70 : x
  2. Step 2: Convert to fraction form
    422,602.62/633,903.93 = 256,040.70/x
  3. Step 3: Cross multiply
    422,602.62x = 633,903.93 × 256,040.70
  4. Step 4: Simplify right side
    422,602.62x = 162,305,205,969.95
  5. Step 5: Solve for x
    x = 162,305,205,969.95/422,602.62
  6. Step 6: Final answer
    x = 384,061.05

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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.