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Finding the Fourth Proportional to 393,415.92, 590,262.12 and 168,767.28

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Solution

The fourth proportional to 393,415.92, 590,262.12 and 168,767.28 is: 253,210.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,415.92 : 590,262.12 = 168,767.28 : x
  2. Step 2: Convert to fraction form
    393,415.92/590,262.12 = 168,767.28/x
  3. Step 3: Cross multiply
    393,415.92x = 590,262.12 × 168,767.28
  4. Step 4: Simplify right side
    393,415.92x = 99,616,932,479.43
  5. Step 5: Solve for x
    x = 99,616,932,479.43/393,415.92
  6. Step 6: Final answer
    x = 253,210.22

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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.