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Finding the Fourth Proportional to 262,471.62, 393,770.15 and 84,978.83

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Solution

The fourth proportional to 262,471.62, 393,770.15 and 84,978.83 is: 127,488.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,471.62 : 393,770.15 = 84,978.83 : x
  2. Step 2: Convert to fraction form
    262,471.62/393,770.15 = 84,978.83/x
  3. Step 3: Cross multiply
    262,471.62x = 393,770.15 × 84,978.83
  4. Step 4: Simplify right side
    262,471.62x = 33,462,124,242.18
  5. Step 5: Solve for x
    x = 33,462,124,242.18/262,471.62
  6. Step 6: Final answer
    x = 127,488.54

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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.