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Finding the Fourth Proportional to 262,286.79, 393,420.84 and 84,789.15

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Solution

The fourth proportional to 262,286.79, 393,420.84 and 84,789.15 is: 127,180.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,286.79 : 393,420.84 = 84,789.15 : x
  2. Step 2: Convert to fraction form
    262,286.79/393,420.84 = 84,789.15/x
  3. Step 3: Cross multiply
    262,286.79x = 393,420.84 × 84,789.15
  4. Step 4: Simplify right side
    262,286.79x = 33,357,818,615.89
  5. Step 5: Solve for x
    x = 33,357,818,615.89/262,286.79
  6. Step 6: Final answer
    x = 127,180.70

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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.