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Finding the Fourth Proportional to 262,409.60, 393,711.60 and 84,922.40

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Solution

The fourth proportional to 262,409.60, 393,711.60 and 84,922.40 is: 127,415.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,409.60 : 393,711.60 = 84,922.40 : x
  2. Step 2: Convert to fraction form
    262,409.60/393,711.60 = 84,922.40/x
  3. Step 3: Cross multiply
    262,409.60x = 393,711.60 × 84,922.40
  4. Step 4: Simplify right side
    262,409.60x = 33,434,933,979.84
  5. Step 5: Solve for x
    x = 33,434,933,979.84/262,409.60
  6. Step 6: Final answer
    x = 127,415.06

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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.