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Finding the Fourth Proportional to 399,634.80, 598,935.45 and 299,005.45

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Solution

The fourth proportional to 399,634.80, 598,935.45 and 299,005.45 is: 448,121.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,634.80 : 598,935.45 = 299,005.45 : x
  2. Step 2: Convert to fraction form
    399,634.80/598,935.45 = 299,005.45/x
  3. Step 3: Cross multiply
    399,634.80x = 598,935.45 × 299,005.45
  4. Step 4: Simplify right side
    399,634.80x = 179,084,963,748.20
  5. Step 5: Solve for x
    x = 179,084,963,748.20/399,634.80
  6. Step 6: Final answer
    x = 448,121.54

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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.