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Finding the Fourth Proportional to 393,042.17, 589,494.81 and 126,802.67

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Solution

The fourth proportional to 393,042.17, 589,494.81 and 126,802.67 is: 190,181.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,042.17 : 589,494.81 = 126,802.67 : x
  2. Step 2: Convert to fraction form
    393,042.17/589,494.81 = 126,802.67/x
  3. Step 3: Cross multiply
    393,042.17x = 589,494.81 × 126,802.67
  4. Step 4: Simplify right side
    393,042.17x = 74,749,513,387.18
  5. Step 5: Solve for x
    x = 74,749,513,387.18/393,042.17
  6. Step 6: Final answer
    x = 190,181.92

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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.