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Finding the Fourth Proportional to 279,384.48, 419,066.64 and 121,613.04

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Solution

The fourth proportional to 279,384.48, 419,066.64 and 121,613.04 is: 182,415.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,384.48 : 419,066.64 = 121,613.04 : x
  2. Step 2: Convert to fraction form
    279,384.48/419,066.64 = 121,613.04/x
  3. Step 3: Cross multiply
    279,384.48x = 419,066.64 × 121,613.04
  4. Step 4: Simplify right side
    279,384.48x = 50,963,968,052.99
  5. Step 5: Solve for x
    x = 50,963,968,052.99/279,384.48
  6. Step 6: Final answer
    x = 182,415.17

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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.