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Finding the Fourth Proportional to 393,334.40, 589,997.76 and 112,853.12

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Solution

The fourth proportional to 393,334.40, 589,997.76 and 112,853.12 is: 169,278.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,334.40 : 589,997.76 = 112,853.12 : x
  2. Step 2: Convert to fraction form
    393,334.40/589,997.76 = 112,853.12/x
  3. Step 3: Cross multiply
    393,334.40x = 589,997.76 × 112,853.12
  4. Step 4: Simplify right side
    393,334.40x = 66,583,088,009.01
  5. Step 5: Solve for x
    x = 66,583,088,009.01/393,334.40
  6. Step 6: Final answer
    x = 169,278.58

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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.