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Finding the Fourth Proportional to 399,633.80, 598,933.95 and 299,004.45

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Solution

The fourth proportional to 399,633.80, 598,933.95 and 299,004.45 is: 448,120.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,633.80 : 598,933.95 = 299,004.45 : x
  2. Step 2: Convert to fraction form
    399,633.80/598,933.95 = 299,004.45/x
  3. Step 3: Cross multiply
    399,633.80x = 598,933.95 × 299,004.45
  4. Step 4: Simplify right side
    399,633.80x = 179,083,916,306.08
  5. Step 5: Solve for x
    x = 179,083,916,306.08/399,633.80
  6. Step 6: Final answer
    x = 448,120.05

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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.