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Finding the Fourth Proportional to 399,978.68, 552,026.95 and 245,022.44

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Solution

The fourth proportional to 399,978.68, 552,026.95 and 245,022.44 is: 338,165.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,978.68 : 552,026.95 = 245,022.44 : x
  2. Step 2: Convert to fraction form
    399,978.68/552,026.95 = 245,022.44/x
  3. Step 3: Cross multiply
    399,978.68x = 552,026.95 × 245,022.44
  4. Step 4: Simplify right side
    399,978.68x = 135,258,986,862.07
  5. Step 5: Solve for x
    x = 135,258,986,862.07/399,978.68
  6. Step 6: Final answer
    x = 338,165.50

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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.