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Finding the Fourth Proportional to 518,991.30, 716,191.74 and 304,274.36

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Solution

The fourth proportional to 518,991.30, 716,191.74 and 304,274.36 is: 419,889.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,991.30 : 716,191.74 = 304,274.36 : x
  2. Step 2: Convert to fraction form
    518,991.30/716,191.74 = 304,274.36/x
  3. Step 3: Cross multiply
    518,991.30x = 716,191.74 × 304,274.36
  4. Step 4: Simplify right side
    518,991.30x = 217,918,785,116.27
  5. Step 5: Solve for x
    x = 217,918,785,116.27/518,991.30
  6. Step 6: Final answer
    x = 419,889.09

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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.