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Finding the Fourth Proportional to 479,476.80, 719,215.20 and 269,087.40

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Solution

The fourth proportional to 479,476.80, 719,215.20 and 269,087.40 is: 403,631.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,476.80 : 719,215.20 = 269,087.40 : x
  2. Step 2: Convert to fraction form
    479,476.80/719,215.20 = 269,087.40/x
  3. Step 3: Cross multiply
    479,476.80x = 719,215.20 × 269,087.40
  4. Step 4: Simplify right side
    479,476.80x = 193,531,748,208.48
  5. Step 5: Solve for x
    x = 193,531,748,208.48/479,476.80
  6. Step 6: Final answer
    x = 403,631.10

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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.