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Finding the Fourth Proportional to 393,043.68, 589,497.06 and 126,804.17

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Solution

The fourth proportional to 393,043.68, 589,497.06 and 126,804.17 is: 190,184.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,043.68 : 589,497.06 = 126,804.17 : x
  2. Step 2: Convert to fraction form
    393,043.68/589,497.06 = 126,804.17/x
  3. Step 3: Cross multiply
    393,043.68x = 589,497.06 × 126,804.17
  4. Step 4: Simplify right side
    393,043.68x = 74,750,682,463.25
  5. Step 5: Solve for x
    x = 74,750,682,463.25/393,043.68
  6. Step 6: Final answer
    x = 190,184.16

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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.