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Finding the Fourth Proportional to 262,416.12, 393,636.56 and 84,937

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Solution

The fourth proportional to 262,416.12, 393,636.56 and 84,937 is: 127,409.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,416.12 : 393,636.56 = 84,937 : x
  2. Step 2: Convert to fraction form
    262,416.12/393,636.56 = 84,937/x
  3. Step 3: Cross multiply
    262,416.12x = 393,636.56 × 84,937
  4. Step 4: Simplify right side
    262,416.12x = 33,434,308,496.72
  5. Step 5: Solve for x
    x = 33,434,308,496.72/262,416.12
  6. Step 6: Final answer
    x = 127,409.51

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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.