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Finding the Fourth Proportional to 393,678.69, 590,520.87 and 168,849.42

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Solution

The fourth proportional to 393,678.69, 590,520.87 and 168,849.42 is: 253,275.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,678.69 : 590,520.87 = 168,849.42 : x
  2. Step 2: Convert to fraction form
    393,678.69/590,520.87 = 168,849.42/x
  3. Step 3: Cross multiply
    393,678.69x = 590,520.87 × 168,849.42
  4. Step 4: Simplify right side
    393,678.69x = 99,709,106,397.40
  5. Step 5: Solve for x
    x = 99,709,106,397.40/393,678.69
  6. Step 6: Final answer
    x = 253,275.35

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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.