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Finding the Fourth Proportional to 451,908.81, 623,066.76 and 330,839.91

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Solution

The fourth proportional to 451,908.81, 623,066.76 and 330,839.91 is: 456,143.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,908.81 : 623,066.76 = 330,839.91 : x
  2. Step 2: Convert to fraction form
    451,908.81/623,066.76 = 330,839.91/x
  3. Step 3: Cross multiply
    451,908.81x = 623,066.76 × 330,839.91
  4. Step 4: Simplify right side
    451,908.81x = 206,135,350,802.39
  5. Step 5: Solve for x
    x = 206,135,350,802.39/451,908.81
  6. Step 6: Final answer
    x = 456,143.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.