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Finding the Fourth Proportional to 298,264.71, 411,057.68 and 279,325.29

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Solution

The fourth proportional to 298,264.71, 411,057.68 and 279,325.29 is: 384,956.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,264.71 : 411,057.68 = 279,325.29 : x
  2. Step 2: Convert to fraction form
    298,264.71/411,057.68 = 279,325.29/x
  3. Step 3: Cross multiply
    298,264.71x = 411,057.68 × 279,325.29
  4. Step 4: Simplify right side
    298,264.71x = 114,818,804,276.10
  5. Step 5: Solve for x
    x = 114,818,804,276.10/298,264.71
  6. Step 6: Final answer
    x = 384,956.05

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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.